Mlw316, looks like you have a good repair started there. On the wing LE, do as Gray Beard says and fabricate a new balsa leading edge piece and splice it in. Scrap the foam and tape idea ! I would put an overlapping splint backup piece of balsa behind the LE at the outermost joint and maybe a small triangular gusset where it is spliced at the rib. Gray Beard's suggestion of a half rib at the outer splice area is good. All that will make that area of the wing plenty strong (but not strong enough to crash into trees again). Cutting out the old tail feathers is the right way to go. Are you going with replacement ARF parts from Tower? With new replacement tail feathers and a little neatly done white covering on the wing LE it will be hard to tell it was ever damaged. Be sure to get the horz. stab glued in parallel to the wing and the vert. stab at 90 degrees from the horz. stab. Get this right and it will not only look like new but it will fly like new too. Take your time and enjoy.