I would now suggest .5 oz fiberglass the Jim Ryan way!!
My "K"will be covered this way.
Solite would be fine if you are more comfortable with iron on films.
Tip #1
The 3 super charger parts are built as follows:
closely cut out the top , bottom and fuselage base.
sand flat by holding parts with 2 sided "Carpet tape", don't sand too much, check your work often.
Cut out from spare plastic sheet, 3 1/16"X 1/4"strips and glue them to the top piece...you are making a inner flange to glue the bottom to, after attaching the bottom, this assembly then gets married up to the base, filled, sanded smooth, then attached to the fuse per the plans.
Extra details...Add a little screen, if you like, and open up a hole in the fuselage to allow a little cooling air in!!
Bruce FRIEND ...not Freind