Congrats on that Dennis! That confirms the theory that B9R resins kinda do not expire.
Regarding PDMS fogging - in general, the lesser details are on print, the less you should worry about PDMS cloudiness. The more intricate, small, sharp and detailed it is expected to be - the more you should keep your eye on it. I usually use PDMS first hand for jewellery and miniatures prints which require a lot of detail and then switch it to a second printer to print bigger simpler items up to point when it becomes completely "dirty" and untransparent. But as said above - just print further and you will understand by yourself. Avoid vertical supports, try to incline them al least a little.