>>> Would a 4 stroke be a better choice than a 2 stroke ?
I have Saito 125 that is in the box. >>>

Well if you go to the "Show us your overpowered plane" thread, you will see a guy with an OS 120AX on his stick. I bet the 125 would work. How much more than the 78 does it weigh? I bet not a whole lot more. I have a ST 91 on my stick, and they are really heavy. It took 6 sticky weights on the tail besides moving the servos to the back...

Ernie