Androstosity

Hero of Oxid Ridge of Hero of Bladehold? Also, you should definitely sideboard Grand Abolisher. He's incredible against almost everything currently. Especially if you're chancing running into a spellskite which could steal your angelic destiny.

Also, boomerang is basically unsummon with a bit of added bang. Return anything, not just a creature. Costs one more blue, but it's cost money wise is still low. Maybe look into that and run that if you want?

If you want to use one of the swords and don't feel like ponying up for a 40$ price tag, why not try Sword of Body and Mind? It'll give you protection from blue and green, mills the opponent 10 when it hits and gives you a bonus wolf. Not bad effects for if you're running blue, in my opinion.

Just a warning because you said you wanted it to be on a budget..... The swords in your sideboard are not cheap. The four of them cost about twice what your mid deck total is...

Thanks much for the comment, and you basically pinged the problem with the deck as it sits. I was thinking about getting an aether vial, but they're expensive and hard to get my hands on. Still working on it.

And to be honest, other than the stingscourger, there hasn't been much thought at all in the sideboard. Just barely have the deck up and running and not even at what it looks like here yet. Any help would be awesome and more than appreciated.

Eh. You don't need to splash blue to be effective... I'd say just keep on with this. A crusader is insane in it's element. Hand it something to pump it's power and watch it wreck fields. I'd look into grabbing that over Saint Traft. Works with more synergy than the Geist in terms of what your deck is stated as being aimed to do. (Basically, you should look into trading/buying the crusaders. They'll take your deck up a whole level on their own.)

Hope that helps a bit.

What about Siege-gang Commander or Warren instigator? They're not too expensive and they're terribly effective.

Quick fix with late night thought behind it....

Nix the bell ringers and the cathars. Add in 4 crusaders.
Nix the mentor of the meek for another abolisher.
Trade 2 elite vanguards for 2 champions of the parish.

That should help to add a bit of buff to your deck and stop your stuff getting zapped on your turn.

Too big along the mana curve to aggro. You can't do much until you have 3 mana.... Lessen the amount of big creatures/plainswalkers for something that can throw damage early game.

Sure, not a problem. I was toying with a human deck before innistrad came out, and have fine tuned mine quite a bit. (Though to be honest, I don't care for T2, so I just do my own thing in legacy.) If it'd help, take a look at my human deck. It has quite a different mechanism than your's in that mine is equip, but it still could help.

Here's my suggestion on your ideas with numbers attached:
Move the avengers to the sideboard. (Mainboard -4)
Add Elite inquisitor in that place. (Mainboard +4)
Don't need 4 Mentors (Mainboard -2-4)
Abolisher is great, but 4 is too high. Only need 1 on the field (Mainboard +2)
Add elite vangaurd to fill up any gaps to fill out to 60.
If you sideboard the avengers, sideboard lawkeepers as well (Sideboard +4, maybe mainboard a few for some control)

Here is my deck. Take a look: http://www.mtgvault.com/ViewDeck.aspx?DeckID=245444

Why not use lightning greaves instead of swiftfoot boots? Love the deck otherwise, but I feel like you might need a bit of diversity in it or maybe a serious threat. I would suggest mirran crusader, but I'm not sure if he'd break some of the synergy of the deck or not...

Might want to bump up your low game a bit.... You don't have enough 1-2 drops for humans... Humans have to blitz as they aren't strong enough to go late game and win without some kind of crazy buff or protections.

I suggest some Elite Inquisitors. Also, Grand Abolisher is almost a must right now due to the fact that it bones over almost every other deck except for creature aggro. Both of those will help lower the curve a bit and the Inquisitor will definitely pull his weight early game with vigilance. Elite Vanguard isn't a bad choice for a first turn drop, but his being vanilla kinds outmodes him pretty early. And you really don't need that many Mentors of the Meek. They're pretty good, but they just seem to slow a good aggro human deck down. And the Gideon's Avengers are great, but you're relying on your opponent tapping his creatures to pump them. So maybe a few Gideon's Lawkeepers wouldn't be a bad idea.

Those are my thoughts. Sorry for the wall of text. Several suggestions with the thoughts attached. Hope this'll help....

I personally would drop the Alaborn Cavaliers for Kinsbaile Cavaliers. That'll give your whole field double strike. Also Knotvine Paladin really only works if it attacks alone.... Might want to find something else to put in instead of him. Knight of the Reliquary would work to get out the better lands if you add some important lands. Wilt-leaf Cavalier and Wilt-leaf Liege are something else you should look into.

Ryusei, the falling star

Metalcraft done big and unwieldy.... Drop it down to about 60 cards. and drop the artifact lands down to 4 a piece. You can only have that much seeing as how they aren't basic lands. Also decide what exactly you want to do with the metalcraft and how you want to run it...

Also surge node would probably help. Pumping the reactor is only one way to win though. Preparing a back up plan would probably be a good idea.

Have you thought of trying Coretapper to try and speed up the Darksteel reactor? Also would probably help if you lowered the amount of different cards you had. It would run more consistently if you made the cards you more common in your deck. Try to add more of the cards you need and remove some of the ones you don't.

You could cut down on the more expensive mana costs for some cheaper creatures and it would run faster. I've noticed that Hero of Bladehold isn't enough of a bomb for a 4 drop in humans. Though Geist-honored monk is alright if you already have a decent field position. Personally, I would replace him for something that works with the humans a little more instead of dropping the spirits though.

You're worried about the wrong cards there.... Mox Sappire and Mox Jet are the ones to worry about. Underground see is cheap in comparison.... Also this deck isn't exactly legal in any play style other than casual. Both of the Moxes are restricted in vintage, banned in everything else and stripmine is the same....

Expensive deck to make, impossible to run anywhere but casual.... But hey, if you have fun with it, that's the point!

I made an attempt at this not too long ago. I got a lot of help on the deck and it was awesome. Been thinking about building it lately. But anyways, was thinking that the suggestions might help you as well.

Here ya go: http://www.mtgvault.com/ViewDeck.aspx?DeckID=254527