I think you might need more creatures in the deck; with only a couple counters/removal you'll be out of an offensive punch and with a maximum burn potential of 32 you have to get through approximately 62.5% of your deck to burn your opponent off assuming they have no way of gaining life that is.
Flamespeaker Adept might be a consideration along with some the Instant Scry/Burn cards, it may help add that offensive edge and help fetch into the Chimera.