Seems to me that if people are able to go hiking in the wilderness for a week or more with everything they need in their backpack, you should be able to do the same thing on a boat. Only difference that you don't have to actually carry the backpack yourself -- just tie it down on the tramp. <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" /> Sounds like a fun trip, since you are doing it on the "inside."
Don't forget to take a paddle. And watch out for tidal current at inlets, because it can sweep you right out to sea, if the current is anything like it is at inlets in Florida.