RE: 3D servos
I was planning for 5625 on aileron and elevator if I go ahead with the Ultra RC Giles I have my eye on. Will probably run a 6985 or 5995TG on rudder.
For batteries I would be looking at low impedance, high discharge NiMH packs from NoBS batteries.
I run 5x 5645 in my Funtana 90 and run a 5 cell Sub C 4200 pack from NoBS. (needed some forward weight.)
My Showtime 90 has 5x Ace 1313 digitals and runs a NoBS 1950 5 cell FAUP Fat A pack.