Some things to think about....
Based on you wanting to spend 1 to 2 years in this RV, you don't want to get on each others nerves the first month and have the rest of the time be miserable. I would really consider buying a truck (if you don't already have one) and a travel trailer. You'll certainly get more bang for your buck with a 25-35' towable, and when you get to your destination you will have the truck/SUV to use a grocery getter and sight seeing vehicle.
How far apart are your stops that you plan on making? If it's no more than 200 miles, that's only 4 hours in a vehicle. Can your daughter get away with not doing school work for those four hours? Even if you stay 5 days at a location and travel 200 miles to your next location, in one year you will have traveled over 14,500 miles. You can see a lot of our beautiful country in 14,000 miles a year.
How handy are you with minor/major vehicle and home repairs? If dependability is an issue for you, you will be able to buy a much newer unit if you go with a travel trailer than you will with either a Class A or C. Hopefully with newer units you will have less repairs.
What will you do in that year or two for income? What type of work do you do now?
Doug