If this model has the filon (non fiberglass) front cap, I would look very closely for signs of delamination of the cap due to leaks at front roof seam or marker lights. Of course you should look for any signs of water intrusion evrywhere. If it has been well maintained, probably a decent rig. If tires are over 4 years old, plan on replacing them and having bearings repacked and brakes checked/replaced as needed.
Steve Rinker
Rochester, NY
2013 Keystone Sydney 340FBH 5th Wheel, 12,280 lbs loaded (scale)
2015.5 GMC Sierra Denali 3500, SRW, Duramax, CC, Payload 3,700 (sticker- not scaled yet)
Take my posts for what they are, opinions based on my own experiences.