I think that if I drew those plans and stood back looking at the size of the TD relative to the nose and fuselage bulk, the first reaction would be to erase it and draw in a .10 or a .15. My early overpowering venture was a Sterling Mini Fledgling with an OS Max .15... ooh the power
. No carb, so it was start and toss. Eventually the elevator ripped off with predictable results.