I'm glad you're getting closer to a setup that works!
Are you sure you've got a C1 airspring in there? Those numbers are around what I'd expect for the B1 airshaft, but as you said, If it works it work.
Also important to check the pressure with the fork fully extended. Compress the fork a little and then lift it off the ground so that you have a reliable baseline.
LSR: -3 also doesn't sound too far out based on the Rockshox and other's recommendations. It may be worth considering stiffening the HSR shim stack if you'd like to open the LSR back up. The Push recommended tunes only require adding a couple shims in, if you'd like to dig yourself into a deeper rabbit hole.
The Norco Ride Aligned setup guide can also be helpful for getting your fork setup in the right ball park, 2020 Sight for 160mm B1 setup, 2021 for 160mm C1 setup. (although your numbers line up with the B1 setup)