Years ago, when I still had a hydraulic roller, I ran more pressure than that. I used a set of FMS lifters and a set of Comp Cams springs with 200lbs on the seat and 440lbs @ .500 lift. Spun the engine to 7500rpm without any problems. I did, however, run all lightweight valvetrain components, oil restrictive pushrods and had killer oil pressure.

I think you will be OK with what you have.