Johnny, on the flywheel resurfacing, if it has no score lines, blue "chatter" or scorched spots, just make sure it is clean (brakekleen, etc.) before assembly, should be okay...but reinstalling without resurfacing after all that work gets me a little puckered until all works out okay...balance the cost of surfacing it against possibly having to R&R your trans/bellhousing/clutch cover, and maybe replace another disc...
On your
oil pressure, be sure to check your gage before you kill yourself over low pressure! A fair "rule of thumb" (for above 3000 rpm anyway) is at least 10 psi per 1000 rpm, e.g., 5,000 rpm=50 psi. Hot, mine has 47 psi at idle, 72 psi indicated at 2700 rpm...