Looks like you have scored some awesome deals. One way you can eliminate about 90% of the moisture, and some of the oil from the air is to go buy a cheap rubber air hose. Leave it rolled up, and put some fittings on each end. Then place it directly off your compressor. The further the air has to travel before it gets to the tools, the more it cools therefore condensing water. So if you have a 50' air hose directly off the compressor, thats equivilant to 50' of hard line. Then probably once a year (depending on amount of use), just replace the hose. A buddy of mine was having a real bad problem with water when he was painting at home, so I suggested this. He did it, and hasn't had a problem with water since, and he has painted almost a full car with it.
Nice work space you have, and this is just my .02,
Joe