After the vacuum did you add freon with the car running or not?
Recently worked with an ac guy and he adds without it running to bring it about 3/4 of the amount needed then fires up the car. Also if the compressor won't kick on it might be either the low or high pressure switches not being happy. In that case you sometimes have to jump the compressor to get it going and once you have let it run for a couple of minutes go back to allowing the pcm control it.