"I’m trying to decide between a couple options I think will serve my needs here well: the IntelliJ quad VcA at 12p and a PAIR of Doepfer A-132-3v modules that would consume 16hp."
it's a pity that veils is out of stock.
You can find some "clones", but most of them are "half veils":
https://www.modulargrid.net/e/calsynth-2vca
https://www.modulargrid.net/e/after-later-audio-dvca-
If you are going to have 4 VCA's, definitely choose a "in cascade" module like Intellijel quad vca
https://www.modulargrid.net/e/intellijel-quad-vca