Won't Fire - Need Help!

Here's the latest:

• Tried to start the car from the ignition; cranked but wouldn't start
• Connected a remote starter, turned ignition on, cranked with remote starter and it fired up.
• Increased RPMs to 2500 to start cam break-in and advanced timing to 35 (BTDC) degrees total. Had to advance a fair amount...
• Checked (New Autometer) Oil Pressure and Temp gauges. Temp gauges was oscillating back and forth like a metronome between 0 and 280. Couldn't tell temp, so only ran for about 5 minutes, shut down engine, and looked for any major leaks
• After cool down, tried to fire the engine from ignition again, no start. Turned left ignition on, cranked with remote starter and fired right up...
• Temp gauge still not functional, so shut down after about another 5 minutes..
• Started poking around the bulkhead connector and found 2 wires (male end connectors) were not seated. According to the wiring diagram, one is for Temp gauge (I spliced into factory wire) and the other comes from Alt and goes to ignition switch! So, looks like I know what contributed to difficulty starting (Cranking from ignition switch) and faulty Temp gauge
• Will clean, re-seat in connector, reinstall, and replace starter with mini-starter next

New Problem:

• Low oil pressure! At 2500 RPMs, pressure was only reading about 25 lbs... Pressure would increase as rpms increased, but not by much...
• Need some ideas on what and how to start checking... Have been reading a few threads (On this Board) on this subject, but not sure where to start. I'm pretty sure I didn't install the two small (Press-in) plugs behind the cam plate, but want to try other things before I start tearing motor apart... Before start-up, I went through all the priming steps correctly (Rotate) every 90 degrees. Initially, didn't have the 90 degree oil adapter tightened enough and blew out the gasket during priming and dumped about 2 quarts of oil on the garage floor... Yes, replaced both gasket, oil, and re-primed...

Don't really want to fire-up the motor again until I can determine what the problem is. Is priming with an electric drill enough to get an accurate pressure reading on the gauge? BTW, gauge has an electric ascending unit..

Any help would be appreciated...