Information needed! Wyoming tags and places to camp and ride.

A little help here forum members, I’m looking for a place to camp with my RV and be able to ride from the campsite. Im wanting to ride in the Medicine Bow/ Snowy Mountain area.
Can anyone recommend a good campsite?
Is it possible to get an out of state RZR tagged in Wyoming so I can ride on non enrolled trails?
I have a 43 foot diesel pusher motor that Id like to be able to park,then ride where ever from there.
Thanks in advance for the help.