Welcome and congratulations on the new machine.
Re fluids. In your situation, I'd call a couple of suppliers or manufacturers and ask tech service for a recommended equivalent to Premier 600. Characteristics I think you DO want: semi synthetic or fully synthetic (yes, more expensive), biodegradable/sewerable, transparent or translucent, claimed long sump life, low irritation/dermatitis potential, and if possible a pH under 10 or so (that goes with low irritation- higher pH will eat your skin). I strongly recommend a microemulsion (they tend to be clear).
I would avoid anything that says it's "soluble" (ie, emulsifiable) oil- those tend to be nasty on several counts. Always milky looking, often short sump life despite claims to the contrary.
Of the ones on the pages you linked to, V-cut SS and most of the ones on page 1317 looked like possibilities. The Beethoven VNF2 sounded like a hit.
I do think your best bet is to call a supplier or distributor and talk to tech services, though. You might also ask Tormach.
If you do find a good equivalent choice, please post it for the rest of us.