Hello!
I don't think I can help you a lot with the rigging - my way of doing it would be to check surviving museum aircraft and try to duplicate that. As for the material, there are options - some do it using elastic thread, like nylon, that keeps itself tight. Hans von Hammer recommended a method in which you stretch sprue so that it's very thin, then cut and glue a length of it, and apply some heat (be careful!) and the plastic stretches a little giving you nice tight lines. I tried it once on a paper model of a 1:33 Sopwith Pup, it worked just beautiful.
As for the scale - first thing, that's a division sign, and it's there for a reason - like 1:72 or 1/72, for example. It simply means you take a measurement on the real thing and divide it by - in this case - 72. So 72 inches (is it 6 feet?) on the real thing are 1 inch on the model. You also have the option on scales like 4:1, when modelling small objects, where you enlarge the object, in this case 4 times.
Hope it helps, have a nice day
Paweł