This same inquiry came up very recently.
Would just say "Bravo," but you state you're still looking for larger diameter but lighter poles (than ski poles and golf clubs).
The kite material websites have carbon tubes in larger diameters than arrow shafts. They will have less flex, and be more suitable for 'mid tents.
You have to do some figuring, but you can get material on the same sites for internal ferrules that fit to make a collapsible pole.
The sites also have good specs, so you can figure out what your weight will be before making the investment. Cheap end caps are in many hardware stores, but how to attach elastic cord inside to hold it together?
There are collapsible avalanche carbon poles on the market, but they are quite expensive. Looking at one, though, might help with design ideas.
Kite shoppe, kitebuilder, or goodwinds are 3 sites.
They have all kinds of gee-gaw fittings to ponder over.