I finally got around to repairing my stik, that lost it's wings in flight (they don't fly very well without wings)

I cut the fuselage off where it was bad and have built a new front half for it. I only have the 1/4 balsa sides and about 1 square inch of plywood holding the front half with the back half. It feels strong, but I don't fully trust it. I was thinking about putting some light fiberglass cloth on the sides to help reinforce it. I have a few questions.

1. is that a dumb idea to use some fiberglass to strengthen the bond.

2. would you use polyurethane or epoxy

3. I was going to use .75oz weight stuff (the really light stuff) is that enough?

4 would you do anything different or do you have any suggestions?

Thanks