What you need to do first is: Both of you set down and make up a budget, and that ought to answer your oun question.
I've been thinking about this very same thing alot since my wife passed away a few months ago. I already own a Class A (2000 year model) that's in very good shape, and has justa bout everything I need in one. so I thought I'd set down and just see if it was possible money wise. I'm already on S.S. income. and that's not going to be enogh to cover the cost. But, if I stay in our home, which is also paid for, I'm not going to able to afford staying here either. Only you can answer this question.