My experience with P75 and P83 has been as 2.5 mcg of 75 and 12.5 of 83, as I search for my daytime mix. This works. I’ve never used A314, but this is like it, at least as for how it affects me. A test of just this is coming soon, possibly at 25 mcg of 83 with the 2.5 of 75.
For some ideas about P79, P83 and P75, see this thread: