Mable,
I have what you want, but you may not want it. The newest at approaching 40yo, and that can be an inconvenience. You will be hared pressed to find any other class A that fits you template, but there are lots of Cs and even a few Bs.
Your target price would indicate 7 to 10yo. If you buy at this age, just get it gone over by a good mechanic. If it is a wood structure and it shows any water leaks, walk away.
What is a big hang up in your note is the thing about storage of camping gear. That leaves an awful lot open to interpretation.
If you are talking about back-packing (real camping), most can manage that, we do (did). We (used to)carry a lot of stuff that is just for use when away from the coach. (We don't do this as much as we once did because I have developed a bad knee.) But, if your camping gear includes a Coleman stove, a house tent and your Yachtzee, then there will be problems.
My honest suggestion; Layout your pack, just like a planning day. Look at how large all the essential and elective pieces are. Take pictures and now, when you are shopping, compare that to the storage spaces. If you are cleaver, you can probably do with less space (volume)than than you thought. Remember, you will want daily access to the things you will also pack.
Matt
