its a good start

i would suggest going with a more thin balsa for the wings. since you're off 169, there's two hobby shops you could go to for thinner stuff. Hub Hobby on 62 and Penn is huge and has absolutely everything you could ever need, HobbyTown USA in Brooklyn Park has a much smaller selection, but they've got some balsa (hobbytown is a little cheaper too). i dont recall ever seeing 1/32" square balsa sticks, but you can cut your own out of a balsa sheet with a ruler. one other sugestion would be to put the top spar that runs along the top/middle of the wing on the inside of the wing ribs, rather than on top of them. this way when you cover it with tissue it'll have cleaner line.

i'm just outside of Plymouth, 15 minutes west, down hwy 55.

nick