I was a bit like you, planning in advance - visiting the rv forums, asking questions, and attending rv shows/seminars - all great resources.
Do you already have a rv? Or, will you be shopping for one?
I can't help you with any lot info, but I gather you think you'll be parked in one location for extended time? Before you purchase anything (rv, lot) you need to figure out the fulltime travel style that suits you. Some folks move every week or 2, to the other end where they have 2 locations - one for summer and one for winter. A bunch of us are somewhere in the middle of that. What appeals to you? Traveling and seeing new sights, wheels rolling? Or, parking for extended time on your lot?
Good luck, and I bet your 4 years will fly by quickly - keep your dreams