You should be able to pick out your floor plan here, just select your year and "Suncruiser":
https://winnebagoind.com/product-res...ct-information
The brochure will also help you sort out what equipment you have along with weight info, etc.
You'll also find links on the page to other valuable info such as wiring and plumbing diagrams and the like. If you have trouble with opening any of the links try "open in another tab".
Water leaks are the greatest threat to your coach so your #1 priority will be to ensure that your roof is adequately sealed against leaks. The most common brand name for the sealant on the "sealant call out sheet" is Manus 75 AM, which is available on Amazon. I also recommend applying Eternabond tape.
Another thing to read up on is the Winnebago windshield leak issue, for which Eternabond is a good solution. The best way to search Winnieowners is to use the Google search block near the top of the page.