Hey echostud,
Thanks for the idea. I hadn't thought about increasing the length of the forward fuselage to deal with the tail heaviness from the addition of tail wheel and flight controls. That's a pretty easy solution, as I haven't built the fuselage yet.
It's also nice to hear that your's flies good at 5000' on a .15 engine Depending on my final all up weight I was thinking about using a .12 that I have laying around. I'm at 3200' here, so it might just work.