Blowby and compression test - 225

IMO
I would not suffer an engine that only had a true 90/93 psi; unless it was a stationary engine, or if I only wanted to idle it around for like a couple of miles a week, lol.

To get a better idea of the condition of your engine;
1) if it has a PCV valve, I would flip it out of the valve cover, start it up and see how much blow-by is actually being created, by what is blasting out of that hole. or
2) if it doesn't have a PCV system, then it will have a road-draft tube, so you can just check it, for billowing smoke.
3) slapping the gas pedal to say 3000 rpm should NOT make the smoke come blasting outta either the hole in the VC nor the draft-tube.
Excessive blow-by can only be coming past the rings..... or thru the pistons, lol. But you know, the compression rings could be stuck in the grooves .......... which would give low pressure readings and blow-by, as would;
out-of-round bores, or huge ring-gaps, scratches in the cylinder walls, or maybe, a plugged muffler.
A LeakDown test will give you a snapshot of what is going on at TDC, but not the why of it. On a tired engine, there is no telling what percentage of the LD is from the worn bore, and what percentage is from the rings, nor why. I mean I'd hate to tear off and rebuild the head, with no improvement, just to find out the rings are stuck. That would suck.....
Doing this test with the piston at the Bottom of the bore will give you a better idea of the ring condition, but to do so, the valve gear has to be disengaged.