Hey welcome. Idaho is great, I've done Mackay and Wallace ATVing so far. That's a Wallace trail in my avatar.
My Canadian 800 Trail has the 4 point seatbelt and I haven't found it sticky so I can't advise on that. The dust with a windshield, that's a thing alright. I won't install one for that reason. I have to say I really haven't noticed any extra cab heat but it might be my thick skin. I think it might be possible to make a boot from car inner tube riveted to the firewall to surround the steering shaft and gas pedal cable.
I run a toy hauler and it's really handy. I picked one (Stealth) that's fairly small and half ton towable at 21 feet but still has a front bed so I can have the SXS loaded and still sleep in it and use the bathroom and kitchen, for those road trips.
You'll have some fun times. Welcome again.
