Update because I loathe when people ask questions, get some answers and never report back what they did...
Anyway, I ended up doing what I set out to do. 220v auto drain connected to the starter. I bought the 220v Moisture Minder from Suburban Manufacturing. I connected the wire leads to the load side of the contactor. This way it only purges water when the compressor is running. I have it set to come on every 30 seconds for a 3 second burst. Since it only comes on when the compressor is running, it will cycle 3 times during that run time. Here are a few pictures of the testing mode and how I mounted it. I might change the mount slightly, but so far I like how it is running. I also need to change the drain port location once I finish plumbing the rest of my system...