I'll be interested in your results. I've been trying the Ortho Plus and have found the info on the Ilford website to be pretty good as a baseline. Reciprocity info is also there...and is pretty accurate. I used D76 stock solution for 10 minutes and wasn't happy with the contrast so I tested it for 13 and was happier. The negs I tested were shot at ISO 80 and had exposure times from 4 seconds to 3-4 minutes.
Not sure about the safety light situation though. I was using a changing bag and Jobo. Good luck!