RE: byron pitts kit
I am quite familiar with the Byron Pitts Special. It was Byron's first kit. It has an all injection molded foam airframe with surface details molded in. The only exceptable finishing method is low temp iron-on film covering or "glassing" with .5 oz fiberglass cloth and either epoxy resin, or water based urethane varnish which some people have gone to for simplicity. Glassing, if done right, will add about a pound of extra weight but a much more durable finish. Since you are not too familiar with glassing, I would recommend you cover it with the low temp film. It would be impossible and uneccesary to sheet the wings with balsa due to the molded detail. Folks that have told you to do this are not familiar with the airplane. Do you have the instruction manual? All of this is covered in the manual...I'd follow it to the letter if you want to be successful.