I am in the process of starting to scratch build some floats for a Dynaflite Super Cub. I have never built anything on floats before and have no experience with their construction. I have a couple of questions regarding my project.

So far, I have a scale drawing of a set of EDO super cub floats. I am planning on making them 48" long and the rest of the dimension will be scaled from that. I plan on making up an internal frame of balsa sticks and light ply formers. The formers that attach to the struts that will hold the floats on will be aircraft grade plywood. I plan on sheeting this frame with balsa sheeting and then fiberglassing the whole structure.

1.) What thickness of sheeting should I use to ensure light weight but will stand up to learning to fly off of floats?

2.) Should I use balsa sheeting on the bottom of the float, or go with a light ply for durability?

3.) What weight cloth should I fiberglass these things with?

4.) What final weight per float should I shoot for? What would be a general ball park, so that way I know if they come out way above this i should redesign and start over.

5.) Should I just save my time and spend the $60 on a set of 46" quarter scale cub floats from SIG?

Thanks for any suggestions,
-Scott-