Yes....you should be OK...put the IJ in from the back and put the EM in from the side (forming a "t")...I have moved two a number of times this way (even two DMDs)...yes the seats should fold flat for you to load them up. When you rent the van ask them if they have stow n go seating...I assume they all do but doesn't hurt to ask.

Yes, IJ will slide in from the back without hitting the top. Also the cardboard or plywood to help slide them in is good...I went away from that and cut a piece of pvc to about 3 ft. long and put the game on top of it and it rolls into the van with very little effort. Then you need to lift the pin to remove the pvc so the game won't slide around in the back when you travel with it. I forget who originally discussed this method but it's been great.