[pairodice]

Your age ranges are about right but you left out tires which should be changed at about 7 years (YMMV and opinions abound). We have replaced the engine belts which we finally figured out was the alternator was just a little off and was eating belts like they were mac-n-cheese! The original owner replaced the salon slide but it was because he rolled it due to not keeping it clean (more than likely). We have not had to replace any hoses really although the coach is currently getting several engine hoses changed as they were brittle but this is just for maintenance.