I know you're looking for an all-in-one solution, but I'd like to suggest another option. I have a low profile / long reach HF jack with claimed range of 3-1/3" to 24-1/4", but to be honest I've never used it with the van. I have a pair of these, and they've proven to be infinitely useful for the van:
The combination jack+stand also means you don't have to set up separate jack stands.
I even used them when replacing the rear leaf springs with progressive Alcans--basically lifted from the axle, used Sunex 1310 10-ton jack stands to hold the frame rails, and dropped the axle down without the wheels.
Love the plum crazy color. Slick.
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I have used what mobile trailer haulers and builders use when they temporarily set mobiles. They are 2x4 nailed/screwed stacked together like the Jenga game. I also use 4x12 and 6x12 blocks I had from home flip projects but they dry up & crack/split over time. I don't have a pic so I drew an smsl example with only a couple stacked. Most are a foot to 1.5 tall. You can make your own with a couple 2x4x96 studs (cheaper than 8'). Make them to whatever your stationary jack stand foot print is.
I absolutely hear you on the storage space! You can even hang jackstands on the wall (although ironically, my combo jack+stands store beneath my "stack" in this picture, where the roll cage tubing and 80/20 is sitting).
Man great idea. I use to stack my 4 sets on a mobile cart.