SIG Kadet LT40
Seaknight1962
Stay with the LT-40 idea and you won't be dissappointed. Get an instructor to check it out and teach you to fly it, that way you don't have to worry about crashing it.
The LT-40 seems to be pretty flexible regarding engine size. I've seen them with 40LA, 46LA, 46FX, 52FS, and all flew fine.
Good luck
Larry