I have a Hog Bipe with a Saito 100 but not the twin, Great combo on this plane but use throttle control but the power is there if I need it, I think the twin would be great, A lot of people have had different grades of balsa in there kits, When I built mine I built it at a friends house (We both worked nights at the time) And we both built them together and the wood between the kits was amazing at the weight differences so we split the heavy and lighter balsa between them, But the Hog can handle the weight easily so the twin will be fine and moving the servo's to the rear will help with balance, When you get it done with the twin I sure hope you post some photos so we all can drool a little over it.
Dauntae