Prime Gray (yes it's SLA) and Form 1 prints should be very similar. Prime gray also has those little bumps from the support structures.
In your case, I'd look up someone with good reviews on 3DHubs or MakeXYZ with a Formlabs printer and have them make some parts for you to see if they're good enough for what you need, and go from there. Might turn out to be your best option!