A great thing, forums. We's all different and have different comfort zones. I WILL ride before making any decisions but generally upright or even reclined is better on my once-herniated-disc lower back.
I'll look into patient disassembly of the ignition switch for a good internal cleaning, can't be much harder than the Honda and Yammy switches I've taken apart.
Onward. Had a little time this morning to remove the fairing bits and the gas tank. Prior to arrival of the bike, the PO sent videos of cold starts of the engine in 60º and 40º temps in which it fired right up with full
choke, then none. It idled very nicely on the chilly South Florida coast.
Fast-forward to startup at 9000 chilly NM feet above sea level: fired right up after three weeks' hiatus, but stumbles at first
chokeposition and dies quickly with the
choke off. I did a quick sync with the Motion Pro but they weren't very far off. However, when the left side fairing came off I discovered this:

Left (return) hose is bent 90º. Hmm. Manual says it's a return hose. So it seems the proper routing is between the frame and radiator hose, under the fairing bracket. Clymers' pic is not helpful so I'll have to get it sorted once new hoses eventually arrive.
That's all for today, travelling here shortly. Good weekend to all, Happy Bricking (unless you gave it up for Lent, in which case: dayum)