Daniel,

What is the plane going to be used for? Fuselage length is not really critical except in special applications like aerobatics. A flying wing is a perfect example. No fuselage at all. If you get the C.G. correct on the wing, and the wing/tail incidences correct, the plane will fly. How it maneuvers will be another story. My dad used to say, "If it looks like it will fly, it will fly." I think your fuselage looks fine. Just watch the C.G.

pmw