From what I am reading the OP has started the engine once where he noted the pressures above. He has not even taken the engine any higher than 2000 it seems [cold], so nobody can predict what oil pressure it will have ABOVE 2000.
Using Brians method with 10psi/1000 he will end up with perfect oil pressure when he starts breaking the engine in at HIGHER revs than 2000 rpm! All plugs seem to be in place and he should just commence with the break in job at the recommended rpm's before he starts throwing parts at it (absolutely with RRR here!).
