I also plow with a my Rhino. I have a 2.5 mile driveway up over a mountain at 3,000 ft. I have the 72" Cycle Country also. You Have to be sure that the plow is wide enough so your tires don't run in unplowed snow.
I found that it is best to plow as soon as the snow falls, obviously is it alot lighter then. I also found that the winch cable will fray and break quickly so I bought the winch Rope and it has worked great.
I don't have chains on the tires. Never really needed them. most of the time I am not even in diff lock, just 4wd.
Cycle Country is awesome to deal with. I egg shaped one of the holes in the plow ( from constant use I'm sure ) I called them and asked what I could do to fix the problem. They sent me a whole new plow FREE OF CHARGE !! ( without the push bars though.)
My driveway is all gravel and I just set the feet up high so I don't dig in and it leaves about 1-2 inches of snow on the road.
I would Highly recommend a plowing wiht the rhino. It works great, you will be surprised how much snow you can push. I plowed 22" off the road last winter with no problems at all.
if you want more info on your rhino check out this site.
RUV - Recreational Utility Vehicles - UtilityOffRoad.com
BTW, you will need a quality winch also, Ramey or Warn. It will get used ALOT when plowing so I wouldn't take the chance with the cheaper winches. The plows are heavy and if the winch breaks while the plow is down you are pretty much screwed and will be walking.