Sammystorm

A mono red deck can run much faster if you scrap your creatures except for the wardriver and instead put four wardrivers in. 4 Goblin BushWhacker, 4 Hero of Oxide Ridge. 4 Kuldatha Rebirths, 4 Memnites, 4 Signal pest, and 4 Ornothopters.

Here is why: With Kuldatha Rebirths you can sack an artifact to get 3 1/1 Goblins and since Memnite and ornothopter cost 0 you can pull this off first turn. The next turn you can play something that gives battlecry and when you attack you have 2/1 goblins. If you get more then one battle cry on the field they start doing massive damage because each battle cry give attacking creatures +1/ +0

If you want I made a very similar red blue deck and you can head over to my profile to check it out.

I don't understand the point of the Arid Mesa and the Misty Rain forest.
In my opinion this deck will have a hard time of finishing because it does very little damage. I would throw in Fireballs or Red Sun Zeniths instead of Gitaxian probe. Also I would side Deceiver Exarch and Splinter Twin. They are good but they slow down this decks control and ability to get out Pyromancer Ascension. Instead I would put in some creature burn spells like pyroclasm and a couple big finishers like Inferno Titan, Cyclops Gladiator, or magma Phoenix. Other then those 3 cards it looks solid!