OVERKILL... balsa spars ribs 3 or 4 inches apart (i dont recomend not sheeting LE and TE as wing will wrist in air and no amount of ribs or hardwood is gonna change that, physics of tention and compression...

erm.. tail dragers are in my oppinion easier to land but i dont particularly like making them... nose gear , harder to ream the engine into the dirt but easier to hit the tail on ground simple stuff... id recomend steering on a .25... y dont you buy a kit? y are you bent on making a wing?