You are too far aft, taking it a little forward from where you are will not affect hovering and helps to reduce the snaping tendences and to have easier landings!, also, check the latteral ballance and geometry. Another thing is to play with the thrust angle, with the right setup it reduces a lot the fight to stay nose up.
I know you have already decided to use 4.8v, but with a 2s lipo and a regulator you can have 6v, less weight and quick charge (at the field if you want) with plenty of power, look at hobbycity.com, very good prices.
All 3d stuff gets better also if you reduce the airframe weight, a cf landing gear with foam wheels is an easy improvement.

Daniel