Free: Contests & Raffles.
Unit 27, November, weather, truck...it could get dammed bad. Like you could go in and be stuck there for an extra week. Probably won't happen but it might. I could be familiar with the area(s) you're looking to hunt...I'll help if I can. Hunting will be good, it's the gettin in and gettin out factor that makes all the difference.
I would stay away from 73. And Idfg does a piss poor job policing motorized restricted areas. If you want to get away from the crowds and do a back pack hunt I suggest flying into unit 27 or hiking back into unit 43 or 39. And if you want to hunt just deer hunt eastern MT like I said before.