If you want rush, take out damselflies. Really, they're not that great. Not as good as cutting down your card amount. Would swap with Mark of life, yes. Adren is a good idea. Wings are a cool concept, but imo fog shield is better. If you have 1 SoFree just take it out.
Those are just my suggestions. Right now I'm too lazy to give exact details about how to tweak it, but you can pm me and I'll post a (hopefully) better deck.