I would guess those spacers make you need a lift even more, as the tire now swings a bigger arc when you steer... I saw you asked earlier about a body lift... Hopefully by now you have noticed that your van is technically unibody, making a body lift impossible...
FWIW, I always tell people that tires have to fit at the extreme travel positions of the suspension, not just at ride height. What you did to make them fit without a lift will pay off in less rubbing once you lift it some too. I will suggest that putting more than about 1.5" of lift on a stock suspension has some serious tradeoffs, mainly with suspension geometry, but also with wear on the steering center link and pitman/idler arms... You might try to find a lower spacer setup and go with that... Jamming a huge spacer in is going to be very problematic, as you've already seen. I did see a lift that includes spacers from
Journeys Offroad that includes a pretty simple spring compressor setup that lets you do it right in the van. Looks pretty easy to re-create...
Good luck!!