How to flush out a new build

UPDATE: Good news! I am officially an idiot! Well, you knew that already. It turns out I had the in and out oil lines reversed on the remote oil filter. Switched them and I now have 75psi at idle (1400rpm) and 85psi at 3500 which is all the higher I took it so far. Why so high? It's a racing motor with a HP oil pump. :BangHead::thumbsup: