On storage, it will run you. Look at out of town lots for cheaper rates. I actually leased a camping site for ours when we had it. Ran about 1k a year.
Features, look at waste and water storage tanks. Some have pretty small ones and that can be a pain.
Buy used FOR SURE. However if hitting the major ones in Ohio and Indiana make sure you know the value as they will over price them. On mine I got a few K knocked off after I remarked I knew the value.
BIG ONE, at least for me, be ready when camping to be mashed in with no privacy. Most rv/trailer sites are stacked right next to each other. Best place I found while owning and being an avid canoe person was up in Loudenville. It is called camp Toodik. Sak to get a rive spot; trust me you will love it. If just using it for the races smaller is better IMHO.