That's pretty close to this one that I put together. Mine runs about $60 and beats Selesnya decks, which is what i have to deal with in my local meta. I'm adding Dragonskull Summit and Blood Crypt to it to make it even faster. Outside of that I can't think of anything to add to make it better.
Has a hard time against heavy control if they get everything in place. Played the guy who won Sunday. (He went 4-0 then 2-0.) Wasn't fast enough game one before he got his combos. Game two was too much for him and he was done turn 4. Game three he did a strange SB into heavy aggro control that caught me off guard with a mull to 4.