I think a Saito .56 will be a bit on the weak side for this airplane. This model is about the size of a GP Ultimate; IOW, more suited to a 70 class four banger. The display model had a YS 63 in it.

A Saito 56 will probably fly it, but I'll bet the performance would be disappointing.

BTW, I too am a proponent of "normal" flying and am not at all involved with the current rage of flip-flop antics. I say that just so you won't think I'm one of those "More POWER, Dude!!!" types who insists on grossly over-powering a model airplane. I have a Saito 56 on my Somethin' Extra; and it is just enough. This bipe will have quite a bit more drag.