RE: COVERING MATERIAL
Any of the tex's work well; Solartex from BalsaUSA, Colortex, Worldtex etc. You can also use Ceconite from Aircraft Spruce and Specialties which works very well and is probably the least expensive but most labor intensive as you have to put on an adhesive to the structure first. My favorite is Solartex--way superior to Coverite in MHO.