Boxin welcome to the forum.
To answer your questions,if you can do the normal maintenance on a car such as oil and filter changes and the like you will have no trouble doing them on a Class C.
As for the test ride. Take it out on the highway at speed and see how it handles and try to get comfortable with it. The ones on Ford Chassis have had more handling problems than those on Chevy Chassis.
See how comfortable you and your passenger in the cockpit, here again the Chevy Chassis based Class C has more room.
Check and make sure all instrumentation is in working order.
Most of the RVs now days have a Rubber roof, some have fiberglass.
While looking on the roof, look at all the openings, vents and such and make sure that they are sealed with no cracks in the sealant, look for all rips or tears in the roof membrane. Another thing to look for on the outside is any signs of repair such as mismatched paint or a new shiny spot.
Look underneath for any leaks or repairs to the frame or components. Check the age of the tires, if they are over 5 years old tell them that it is not acceptable.
Your Idea of renting to see how you like it is a very good idea.
The only pointers on renting is to ask if they are having any specials,El Monte does have some at times, like extra mileage if booked for more than 3 days and mid week specials.
While considering what to look for, look for the floor plan that will suit your needs. Then see what is in stock at the dealer and what your budget will be, go in and take a test ride, ask for all records on its maintenance, that is a must, then make an offer.
Extended warranties are not a good deal for you, most come with a 1 year one anyway.
If there are any more questions just ask, there are many other folks here that have a wealth of knowledge.
