Need a Class C for subzero temps and a few other questions

Forgot to mention.. if you are going with a slide(s) make sure that they are made for winter use as well. Many slides do not seal that well so when out they let a lot of cold in. Also make sure that it has a awning over it, having a dump of snow then having it freeze is a pain when you want to bring it in. Also check the operation of the slide carefully, in plus weather small issues you can live with in minus it can mean the slide not working.