In a shameless bout of plagarism, I am working on a 40 sized VE (54" span, 56" long, 540sqin area). In the absence of real design info, I have been working from pics of Nat Penton's VE, Richard Lewis's VE and Andre's 65" version. This is mostly OK and I am fine with the TLAR method for this, but I want to know if there are any really crucial design elements I need to get right? Anything like location of the vertical fins relative to CofG, etc. The rest is just basic design and I can handle that well enough...

Thanks,
Mark