I'm running about 16.5 right now at the track at 5800 feet above sea level. I'm hoping for high 14s at the track sometime this summer with 10 PSI.
I'm assuming you got the JR fuel pump then. That is a walbro fuel pump, but from what I understand it's only the 192lph high flow fuel pump, or something like that. It should work fine for both 6 and 8 PSI, but I'm not sure about 10. I really don't know a whole lot about that particular fuel pump to make any good solid judgements for or against it.