I have the same year model.
The one flaw with mine is the material that covers the bottom of the slides. The slides do NOT have a drip edge, water travels under then wicks up into the slide floor. The fabric covering the bottom of the slides is porous and also has staple holes, big design flaw by Jayco. Do check by poking underneath the slides with a screwdriver and check for rot.
I caught onto what was causing it and put a vinyl drip edge on the bottom. Other than that no issues.
I would strongly recommend that if you do buy this unit get some type of sealer and coat the entire bottom surface of the slides.
I lived in mine full time while relocating for my job in northern Kentucky for three winters and while it was cold outside, I was able to stay comfortable inside on about a gallon of propane per day.
Mine is wood construction and has a rubber roof. Do also check the caulk and seams, at that age it will need some attention.
Good luck,
Chris