I have a spare henry, it’s a reconditioned one from ebay, really good, I put hepa bags in it which I’d suggest would be good for the space as it filters out very fine dust. I can long term loan it to the space for Phase I.
There’s a red hover in messy by the metal bench - potentially was going to use it for CNC extraction but now there’s the old woodshop dust extractor which might be better but is rather large so might stick with the small one if it works, not investigated yet.
The kercher is an excellent hoover, currently used in wood and messy for the extra dust, works very well just sometimes has a blockage.