A little more info would help. How much wing area, in addition to the projected finish weight. I come up with a 96.5" wingspan for quarter scale (PT-17). I know plenty of guys flying G-62 on 32 to 40 lb warbirds. Would probably fly it scale ok (on the wing). I have no personal experience with G-62 yet (have two going in projects soon) but I know lots of guys using them. They like 22x10 props. Just my opinion.
Edwin