I did see one ramp van that had the 12" high top, but they were looking for $12,000 for it, it was a 2003 handicap conversion van.  But again, the hitch might be a problem with the lowered floor design.  A hitch I will need to tow either the Yuppie Wagon -

or the Gear Wagon -

The Yuppie Wagon is less expensive, and has an optional storage rack, which would work nice for Cannoe or Kayak and solar panels I hope to encorporate sooner or later, along with a wind turbines as well.   Battery pack in the cargo trailer along with the generator, water and propane tanks.

one piece of equipment I would/will have on board or stored in the trailer will be the Kelly Kettle, for heating water and cooking, it comes in three models, all three in either aluminum or stainless steel, the smallest, the Trekker above, holds and heats 1/2 liter of water (above) the medium sized Scout (below) holds and heats 1.3 liters and the largest, the Basecamp (bottom) holds/heats 1.6 liters

All three have a cook top option and can be bought as a set, including the pot stand, pot with a lid, the grill to cover the fire base and a removable pot handle.   I plan on having a small aluminum (trekker) for hiking and camping, with the cook top kit, and also for use with the RV or with larger groups when camping, both the Scout and Basecamp (those possibly in stainless steel, as I'm not as concerned about their weight as I would be for the one mostly intended for hiking and camping.



And in addition, I've started the $5 week for emergency rations, not really sticking with the $5, sometimes spending only a couple dollars and other times $10 or more, but it should average out.
I started with the powdered Propel fitness water, some instant soups and such and a couple containers of peanut butter, since it has a shelf life of a couple years.   I thought that I would keep it and rotate the older ones out as I buy more to use in the mean time. 

In addition I've accumulated plenty of seeds for gardening and will be planting a pretty good sized garden this year (even though I'm planning on moving, since last year I didn't plant one because I was planning on being moved by the end of the summer, but it didn't happen, and then I had no garden as well, so not making that mistake again.  Tomatoes, several different sizes, cucumbers, leaf and head lettuce, green beans - bush and pole type, potatoes, radishes, some onions and peppers for my wife (I can't stand them myself, and feel their a waste of garden space but....)