HF 21 gal. air compressor?

I admit I have been my own bodyman for several decades now, but I moved to Tx 2 1/2 year ago, thus no place to really work or have a real air compressor. For several reasons I do not want to buy another "real" and adequate compressor right now.
I know their 21 gal I think it is a 2 1/2 horse oil lube job will not handle a DA but all I really need is something I can spray primer and acrylic urethane top coat. I think their info states 4.9 cfm at 90 but nothing stated at 40. Can I get it done with this compressor. The primer is my main objective. I have a friend that just bought a body shop with a booth I can use once his lawsuit over the deal is cleared up!
Yes I know what I really need!!!!