A dedicated air intake is not a problem. That was already in the plans. The current stove sits so close to an unsealed (temporary) door that it gets all the air it needs.
I can come through the wall directly behind the current stove with as much air intake as needed. This stove is built of 15" of 10" square tube and 12" of 6" square tube.
Here's a shot of my chimney. It's great for anything:
Maybe rocket is not the way to go, but I do not yet know that. We have independent solar electric and a small propane heater for backup. I'm currently rebuilding a ThermoKing Tripac APU that will eventually provide supplemental heat and cooling to the rear half of the bus (bedroom/bathroom/laundry), but I do not want to depend on any fossil fuel for primary heat. My original plan was propane fired radiant floor heat, but we changed our minds. A Kimberly seems just the ticket. but...$
Come on, Great Minds, let's hear from you.
P.S. We do not drive the bus with this stove setup. I was ready to start building the permanent hearth/heat shield setup when I started thinking rocket. As of now, we take the stove out before driving. Not convenient in winter.