Nige, your ideas will work, and truthfully, will work well. With regards to soldering, with a decent iron (don't cheap out, here... just cause frustration!) or small torch, soldering isn't difficult. The trick is, heat the work-surface, not the solder itself. When the work is hot enough, it will melt the solder and suck it into any gaps and joins. It'll be basically like doing copper plumbing.
With SuperGlue, I'd recommend a "third hand" device to hold things steady. Be useful for so many other things, too!
Another option, and it's one that I'll be using on a dio (hit my link to the campaign!) is to purchase some styrene. It's sold here in Canada under the brand name "Evergreen" and probably a few others It's available in a wide range of profiles, from I-beam and squares rod to half-round tubing and plain or pre-textured sheets. If you can't find it in your model shop, you should be to get it at a model railroading supply store. Failing that, I'm sure you can order it online. All you need then, is a razor saw and model glue. Oh! I almost forgot... there's also such a thing as
flexible super styrene, which I would assume would work much the same as regular styrene.
I hope this helps you, sir!
Lewis (Or shall I sign it, Leodhas?)