Rose, check out this thread putting to recliners in the slideout. It's a different model, so take good measurement for your plans.
http://www.thorforums.com/forums/f27...uch-10590.html
I replaced our dinette with a flip trifold sofa. I had to relocate the seat belts to the back wall and a bunch of trim molding has to be change yet, but it's really worth it.