I'd say you got a good starting point.
I had 48 Novis on my 967 and I was running
125M
130 P
21-22 psi pop off (raised from 17 by stretching springs since I didn't have 2.3 N/A)
Doubled up the check valves
Ran really good, I'm about 800 feet above sea level...
For the return, I'm pretty sure...