Oil pressure-How much is too much?

Once certain of adequate Engine Temperature, and the Oil.... IMO, your concerns should then focus on ascertaining actual Oil Temperature @ Load... more specifically is the Engine Oil getting too Hot(200+) too quickly ?
Without any knowledge of the clearances used in the Shortblock.... one of the biggest cautions to Bearing fatigue.... is the free Flow of Oil to the Bearings to maintain Bearing COOLING !
Vertical Bearing Clearance, and Side Clearance in Rod pairs.... are responsible NOT just for lubricating the Bearing.... but for allowing Oil in... and OUT to cool the Bearings.
just saying.... if this Engine continues to have extremely High Oil Pressure even if after warm, with lighter oils, potentially the clearances may be too tight... Pressure = HEAT !

Question;
What "kind" of Solid Roller Cam are you running on the "Street" to 6500 rpm ? What was the Head Flow ?
"Race", or a "Street" Roller profile ?
What Spring Rate & installed Seat Pressure ?