My Last Oil Question!!! Lol

I hope this is my last question, but is 13-15 psi of pressure at idle to little or is it ok when engine is warm/hot? It goes to 40-46psi at 2000 RPM hot, as high as 50-55 when hot at higher revs. It is another 318, runs well, no noises,except for a rocker or two that ticks a little when warm, running 10w40 Royal Purple synthetic.

Also, would a synthetic with a 5w-50 rating be too light in the morning? They do make that weight by Castrol. I just want to make sure its all ok, because besides the slight rocker tick tick, it makes no major sounds and runs great. Don't want to rebuild if not terribly needed. Thanks.