I do run a 1/2" drive impact. It has a decent size tank. I let it recharge after each tire just to make sure I'm at full pressure for tightening.
It came with an air nailer, hose, some staples and nails for the nailer, pressure gauge, and an air blow gun. I upgraded the hose right away though. 1/4" hose I think it was, bit small for flow reasons.
It's been good. I haven't had any issues yet, and it's handled everything I've used it for in my garage.