Sorry to hear about your situation hope you get back in the air soon. I dont want to sound blunt but once oil pressure was lost I would not have flown the aircraft back home regardless. Just an observation I have come across since I started test flying my aircraft was majority of pilots I spoke to who fly Jab engine, when asked what oil temp & pressure they read for my own comparison, they couldn't give me an exact figure all just said its in the green. I find that concerning as flying is not only piloting the aircraft its also engine management.