I have got an even better idea. Why not go after the F-16 class, with their 16'4" length, or the F-18 with their 18'1" length? Excuse me, but you seem a bit obsessive on the length question. Especially at this rather tender stage. Call it "Project George" and lets move on, or at least use arguments that mean something. There is nothing except some marketing in a name, but arguments like weight, speed, building process etc. really matters.
I'll repeat what I see as the primary goal of "the class" targeting 8-14 year olds: