You need a service manual to trace the signals.

Short answer, yes. Remove compressor and change the oil. Also flush the entire system.

Get the vehicle warmed up, have someone turn off the engine while you are looking at the fan. If the blade still spins when the engine is off, replace the clutch. You should be able to find a YouTube video on testing the fan clutch.

Verify the proper amount of refrigerant.

First, you can not pull a vacuum to 31 to 32 PSI. 29.9 is all she writes. Red dye is useless; use UV dye with the light and glasses. You can check the evap at the drain hose just be careful not to get condensation into the detector tip. You can try to place a shower cap or plastic bag around the com...

No it is NOT. Automotive R12 uses viscosity 525 while R22 uses 150 depending upon the evap temperature. Goggle 3g, 4G, and 5G

You may be low on refrigerant. The first thing you need to check is the refrigerant. Recover the charge and see if it is low. Properly recharge and go from there. I think you can get a set of gauges from this site.

Get thr4 pressures correct and do not forget to check the blend doors. Clamp off the heater core also.

32 oz was for R12 right? I realize you have a new condenser and fans but did you try to mist the condenser with a water hose? IF psi drops a lot, you could still have air flow problem. 105 ambient with vent of 60 is not that bad. Does that model have a heat exchanger in the high side lines?

Try a large salvage yard like LKQ. They are all over the world.