Replace a few fireflies with wings to pwn other immogolems (specifically those which are too aggressive to pack PC) perhaps?
Maybe a stiletto too for more sustainability. Longbow is -7 and stiletto is +4 -4 which makes the hp difference 8, although I doubt that whether the heal is going to be any useful for a rush... against silver league (in which immolation-based decks with some healing shines) it -probably- is, though.