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!!!!
Shooting primer should be okay but shooting a top coat on a complete car unless it's in pieces is going to be quite a challenge. You have to blend in two sides like when you're doing the roof before it starts to dry which is hard to do when your compressor is trying to keep up. I would try and get one with a little more cfm's. You won't regret it. Steve