As I see it you have a couple of options. Genie and a slave for the second TV or get serious and rewire the RV in the right way. I just did a serious modification in my fiver so I can run a genie and wireless slave off on two different dishes.
It is a major highway so no worries there. Snow? Sure at 4000 foot elevations you can see snow any month of the year.
Two resources to look at. Weather bud and tripcheck. Tripcheck will show you live traffic cams for the entire state.
Yes they help. If you have a signal they will boost it 1-2bars. No signal then nothing is going to help short of a different carrier. I know for instance at Lapine State park the only carrier you can use is Verizon.
No i am dead serious. From your post it appears obvious you are not financially capable of making the purchases necessary to do it right. So maybe it is time to cut your losses get yourself on a sound financial footing before going further in the hole.
Airstream = lots of hype, very little storage, cramped interiors, no slides. way over priced.
I remember years ago some folks we camped with traded a 15 foot TT for a whopping huge 22 foot Airstream. Parked them door to door and started unloading their old trailer into the new one. After a couple of hours the wife hollers to STOP! There is no more room in their Airstream. And we still had lots of stuff to transfer that ended up in the garage. That AS lasted maybe three months before it was sold and they moved back to a more conventional trailer.