i think you all doing very big mistke runing so RICH up to 0.7 bar you dont need to be lower then 13-12.5 but it depends on the ignition timing and C.R also i would advise to use the WB with EGT gauge and see the temps not above 750c

also to raise the fule presure is nice but you will get over fueling off boost

about the ideal ther is not a formula that your engine sould be at 14.7 AFR
you should give him what he needs i saw engines that ideal fine with 15.5-16.5 AFR but also i see engins that ideal at 13 so befor you play with it please do some resarch about it because you can damege you engine easly!!