Why not just pay to have the coach professionally inspected. Then you'll know what problems may exist or are lurking waiting to fail. Then take this list with you and get those items fixed/serviced.
Tony & Ruth........... FMCA#F416727
2016 London Aire 4519, Freightliner chassis, Cummins ISX, 2018 Jeep Wrangler Unlimited, Blue Ox Avail with AF1. TST 507 TPMS