How often do you drain your air compressor?

I store mine full shut off at the tank.

Your setup looks great, Its almost identical,
If you can go from your pump to your coil you built, then to your tank you will improve alot.
Add more pipe as you say because you will catch ALOT more water.
I've got another 60 gallon tank that I was planning on putting in-line after the copper, it's on the list as well.