Chad, the time to pressurize is not a big concern to me. If I am going to use the truck and it's a cold startup, I always let it warm up 15 or 20 minutes minimum before I take off anyway. On a warm start, it will usually have plenty of pressure anyway.
Rizzo, I just have the regular Duece compressor. It's more than ample for small jobs. For example, when I took the truck to my buddies place to take off the bed, my 1/2 inch impact buzzed off the nuts in no time. By the time I got to the next one, there was plenty of air. Used it to take off all the mud guards also, no problem. This will just give me a little more volume to work with. If I am at the house, I have another compressor to use. Also, I have a 3/4 inch Robo to plug into the slave recptacle if I need it. Generally I just hook up to the quick disconnect I have in the cab by the pass. door, although I have a glad hand hookup with a mini regulator that I have set to the pressure I keep in the tires when I want to air them all up.
Bjorn, found a filter I am going to try. Will put it immediately before the check valve. I found it in the pneumatic tool/compressor accessory section at the lumber yard I deal with. It is for water and particulate matter, has a replaceable cartrige, 3/8NPT input and outlet, good for 150 PSI, and can handle 65 cfm. and a drain on the bottom. Hopefully it will collect any residue junk from the three other tanks. Will let you know!
BC