As other posters have said asking price is way way to high. NADA low retail is $4100. If you want it offer $3500. I have owned a 94 Caribou which is a Elkhorn on steroids. What your looking at is a much smaller version of my 11'6". It has been a great camper for me.
Having said that, look careful for leaks (true of any camper purchase.
It is a wood frame camper with a rubber roof. 13 years old. As a rule I consider the life span of a rubber roof as 12 years. Take a look to see if it has not been maintained.
As to the bed area over the truck cab. If there are no roof leaks don't worry about it. A crew cab offers no more support than your reg cab which is 0.
My 94 supports my 280 lbs and 150 lbs for 2 dogs.
My personal opinion is I'm happy with my Fleetwood and am buying a newer 11' 6" Caribou to get electric jacks and onboard LP gen set and under $4k. There are better deals out there.