Ok, more advice from me.
Backpack versus suitcase, the age old debate. I travelled around America after camp with 3 other guys in a van, so my preference by far was a suitacase. Its big, square, it fits everything I need into it, it fits into the car real easy, and the only time I used it was when we crashed the night in a hostel or motel, so was easy to get things in and out in the room. 2 of my mates im travellng with had backpacks, but ended up buying a big suitcase on wheels from Wal-Mart, to fit everything in, and its so much easier.
The only time I would ever go with a backpack is if you are actually indeed backpacking, not driving around. Backpacking involves a lot of walking around cities etc, and u need to be able to easily transport things. Wheeling a suitcase long distances is a nuisance, but carrying a massive bag on ur back does get to be a big pain.
Not travelling so much after camp? Unless you are unpacking a backpack into a trunk at camp, a suitcase is a lot easier, just as you have quick and easy access in your cabin, whether its photos from home to show kids, or something aerodynamic and weighted to throw at a counsellor who snores loudly.
"It's the kid inside of us that keeps us all from going crazy..."