Update- I made a few tweaks to my air supply set up, and switched everything over to Milton Type V high flow connections during the week. Thanks for the recommendation scihpi and Trav! I thought I had top of the line connections, I did, but they were industrial. I learned Type V high flow is better!
I used it yesterday with the new connections for a tire rotation and rear brake inspection, and it works like a champ. I joined two sections of hose for 100' length and the impact gun worked like a champ even with 100' of hose. I'm liking this thing more and more. The tank holds air for weeks without any loss at all. I dump the air from the hose after each use, and keep no pressure in the regulator, only the tank.
My only regret is I didn't buy it the day I moved into this house!