Yes the pump has been machined/improved and the pressure relief increased as well as some improvements to the oil paths.
I think you did something similar with your build.
Will have to look at what oil will suit best, cost is not an issue, also I think as long as the pump is in tip top condition all should be good, more problems lie here form lack of regular oil changes and maintenance and as you know the earlier 1F was more of an issue.
Do a search and note the number of motors where either main 3 or bigend 5 fail. Various theories as to why this is - I'm inclined to go with the fact there is slightly less oil in these bearings becaise 3 main feeds the rockers oiling.
Will be interested to see what your oil pressures are like once you've redlined it a few times
Might like to consider a twin filter remote mount (or have you already - cant recall) - something like a 5-7 psi drop across a single filter...