Yeah, I can agree with that. Originally, at the beginning of this forum I thought you meant the 17" wingspan BF-109. So, I think that would work. Especially if they give some info on putting a .049 on it and flying it Free Flight. Get your CG correct and do some glide tests, and if it glides nice, fire that baby up.
Fuel guide for a Cox .049 Diesel
http://coxengines.ca/files/FG.pdf