Thank you both for your insight. Being able to paint down to 50 degrees would be a big help. I do have an unheated portion of my garage that I think I can set up for a paint booth without too much construction required. It would be warmer than an outdoor tent so that may help the timeframe somewhat. Kevin, if understand correctly your paint choice was an enamel, just not the hardware store variety. Not sure of the uethane option has the same temperature range.
I will look into the PPG Accuspray gun, clean up with the HVLP gun I have is a pain. I thnk my compressor is up to the task but I will need to add a regulator and filters to the air outlet area that is in the unheated protion of the garage.