Thanks for all the advice.
I'll have installed an OS AX46, turning an 11x5... should be plenty of power.
The steel motor mounts are a very good idea! I will definitely make a set before I go flying.
The approach is fairly short at our flying field (
www.sccmas.org)... definitely not 400 yards. So, considering what I have been reading (here and elsewhere) about this plane floating, and given the fact that I cannot have inboard flaps; I have set up the plane/radio to use spoilerons and programmed the air-brake setting.
I'll report back after I get a few flights in.
Cheers
-Mark