After replacing all the above items which fixed the leak issue, the A/C compressor was still not engaging. With the ignition in the run position, I was unable to get continuity between the blue/yellow wire of the high pressure switch, and bypassing it by jumping the connector also did nothing. I had trouble tracing the wires with the Haynes manual, because the A/C system was changed up mid-2003 with fewer wires, but ended figuring out that the ground goes through the A/C switch in the center console and out to the high pressure switch. The connector in the back of the air temp/speed board had just barely wiggled out (see above picture), not enough for the A/C light to stop working, but enough for the ground to no longer complete the circuit to the pressure switch.
The complete list of items used in this project, and other projects, can be found in the Parts List below.