I have seen your photos of your BHO setup and I must say that in my honest opinion, you are covering all your bases pretty well there. I run my own too, with a pretty similar setup (although mine isn't as permanent as yours - mine all gets boxed up after each run) and I personally do cure for two-three days after the run because I find that the flavor profile has fully matured by that time. I notice that's when the stink of the unvaped concentrate jumps up a notch too.
someone with a solid purge procedure (like you) should be all good in a few days in my opinion. My Blue Dream girls have become super waxy, and I find that I can speed the purge by dibbling like a cap full of iso onto the shatter to thin it a little just before I put the vac on, but I only do it with that strain.
I only use my herc now because I don't have to winterize. Every time I winterize for Cera I wash all the flavor out. I need terps.