A Saito 82 will 3D the plane well if you keep it light... I've got a Saito 91 on mine and it'll do anything I want, plus has good pull out of a hover... A lot of guys put a Saito 100 on them... Mine came out at 5lbs 4oz with the 91 and I added some CF bar to reinforce the fuse...

BTW, if you got your's off eBay, cut the covering and reinforce the wing spar and glass where the wings join...