Amen to that!! 52% Edge is ALL I need!
I would seriously take a look at the Wild Hare Baby Edge, or the Quique Somenzini 73" Yak, either one with a ZDZ 40, hitec 5625's
and Lithiums for power, on something that size, I wouldn't recommend dual rx batts, due to the fact that every ounce really counts!
one servo per surface should be more than enough power, plus those are very fast, and responsive. That would be my best choice for 3d before going Giant Scale. If going Giant Scale, then that's a whole other story! Good Luck!!