then picture ACMacks beautiful, clean design going straight in to the ground as it torque rolls on take off. those wings are small enough, you wont be winning any climb and glide, trust me. i went that route before.
apart from the tapers... ( i'm thinking cheat the tip vortices here by having swept forward TE's ) (( they cant move forwards right?)) AKmacs idea is pretty spot on.
i also think large long spinner to get engine as far back as possible into thicker bits of fuz, and somehow i keep think back to sommit i heard about square fuzs with shape corners are more efficent than round ones, at least for fitting the gear in.
flat bottom laminar for low AoA ( dragqueen had that ) i could scan the templates i found the other day.
on smooth surfaces... i covered the wing in 1/16" balsa, stronger than Obdeci and you can sand it hiding any contors in the foam wing. foam was blue for strenght, so little of it it didnt matter about the weight.
umm what else, engine, rear induction rear exhaust, hide that in the fuz or canopy.... torque rods to move surfaces, no showing controls, hide fuel up point behind hatch.. i know i'll think of more

scan of the templates, the size of the pic is a full lenght of A4, thats how small the wing was.