You definitely want a playset of Drover of the Mighty and Ranging Raptors. The ramp they provide is great, and they're both good bodies to have on the playing field. I'd reccomend dropping down to two Rampaging Ferocidon to put them in. That card is absolutely amazing, but since this is a creature based deck putting one in too early could wind up being a problem. I'd Reccomend dropping the Raging Swordtooth and putting in four Ravenous Daggertooth

Also, you don't need four Charging Monstrosaur. You have too many five mana cards. Having that many means that you're more likely to pull one of them early, when you really need two or three mana cards. Drop them down to 2, and put in two Raptor Hatchling. Also, Savage Stomp isn't as good as Pounce. This is only due to pounces instant speed. Stomp has the advantage of the counter it provides, but at sorcery speed it's meh. A far as sideboard goes replace your Rile with Shock. Same mana cost, more damage, better card. You don't have enough enrage mechanics to make Rile worthwhile.

Sorry mixed up a card. Don't put in Raptor Hatchling put in Thrash of Raptors