How much of the oil did you use? you add it right into the compressor right?My lines were empty from the small leak I had so I just used some towels, ziplocs and some zipties to prevent any further leakage after I disconnected the lines.
As for the vendor, I went with PitStopAuto and ordered part #1010383 for $158. It states you need to the component kit ($238 with compressor) for the warranty that I opted out for. I literally did the minimal amount of work to get AC blowing cold again and it works like a champ. It does come with the PAG oil that you will need as well.