Was the passage/port that the IAC clear and open?
If it was partailly clogged it can contribute to some of this.
Did you tested any of those componets you replaced from the other motor?
Also that pressure with the key on is high.
Should be between 30-44 PSI.
Might try replacing that fuel pressure regulator.
Here is a
link that will help you test the IAC and TPS and a few other things in your fuel system.
Hope that helps!