$27K CND ($21K for those of us in the warmer half of North America) for the Coachmen seems a reasonable asking price but see if you can get a the price down a few thousand. Set aside a few thousand to cover initial expenses such as getting the coach maintenance back on schedule if necessary. Learn how to read tire manufacture date codes. RV tires don't normally wear out but will age out. Also either learn how to spot water damage or have a coach you have your eye on inspected.
Both groups, class A or C, have pros and cons. Class A will have a bit more storage and weight capacity while the C has more mattress square footage. Performance when on the move is an important aspect of a coach but you might want to place floor plan a bit higher on the priority list. You'll spent a lot more time in a camp ground then moving down the road so getting a floor plan the fits your needs should be high on the list on needs and wants.
While on the road you really want to keep movement to a minimum and everyone seat belted. Think of it in the same light as flying. The ride can go from smooth and comfortable to a nightmare with no warning. I've thrown the dog around enough that he pretty much finds his spot, passenger side front corner, and stays there when on the go.
