I did some more napkin math.... if the pump/holding tank/ valve setup is calibrated to drop ~.35ML for each "drop", that would correspond to about 1 micron Z in a tank sized 24"x22.5"x14.5". So...a modified syringe with the valves I described would work pretty well for that volume. Seems like you could maintain extremely fast print speeds simply by scaling up the size of the "drops" in larger containers.

So how wide can we make the deflection angle on the printer? It would be cool if it can be made wide enough to accommodate mounting the printer on the ceiling and then printing into a vat on the floor.... it could probably scale to printing car sized objects easily enough.