Don't bother. Even though sage advice is to back rivet the wing top skin, I consistently get better results doing standard swivel flush rivet head and my favorite bucking bar.

Carl

Any recommendations where to get nut plate jigs and which type I can anticipate using on the wing and fuse? Thanks

You really don't need a special jig as a regular nutplate works just fine for the purpose. But if really want one the Yard Store and Cleaveland Tools, among others, carry them.

Also no need for special cutters for the counter sinks as the ones you already have will do the job just fine. If you plan on buildings multiple kits then yeah, it might make more sense to have FG only tools, but for one kit you can get by without having the perfect tool for each task. My $.02.