I'd suggest building with symmetrical airfoils, at 0-0 incidence. Aim for mid wing and mid stab. 0 downthrust, 0 right thrust. I'd make it taildragger upright, and trike inverted, then a normal fin can be used, but use a fin that's like that of the ultrastick, wide, not tall. Clearance for the trike gear, ya know.

I'd be suggesting a fin top and bottom, but there comes a time when orientation suffers.

Alot of the 3d, funfly and profile planes would be good wing donors.

Whatever ya build, be sure you can tell top from bottom even in silouette.

J