I don't have the exact model but have taken 4 multi-months trips since I bought it in 2015. I had the stove vent flap break off because I forgot to latch it while traveling. That's it for problems. There are occasional lemon units but you can avoid most problems with a knowledgeable and thorough inspection. You have to thoroughly test each and every piece of equipment (and know how it should work, what noises it should make, etc.) My unit had a grinding noise when the slide went out as an example. They wanted my check so they overhauled it overnight along with a few other items I found. Bottom line: Don't pay them until you are prepared to drive it off the lot and start a 10,000 mile trip. Don't trust them to do anything after you pay them and don't let them rush you on the inspection. Your part of the deal is to know what to look for. If you are an experienced RVer you're probably set, otherwise, google is your friend. There are endless checklists and other resources. Be really thorough checking if anything leaks, including the roof, end caps, etc.
Bonus tip: Once you've made your best deal, see what else you can get them to throw in for free. They are generally willing to do this to close the deal since something they would charge you $500.00 for actually costs them a fraction of that, so you both win in a sense.
You picked a nice size unit. It will get you into state parks and campgrounds that a bigger one won't. I downsized from a larger unit so I miss the luxury and additional room but my truck and I both love losing 7 feet of length and 4,000 lbs. If you came from something smaller, you will be thrilled with it. It's all relative and there are always tradeoffs.
Bargain hard, inspect well, and then hit the road!
2015 Crossroads Cruiser Aire CAF27RL, 2018 F250 diesel crewcab SRW 4WD short bed, Trailer Saver hitch with Reese adapter on Ford OEM underbed 5th wheel connector.