Sandblasting...Newbie ?

[84C10EC]

Hey guys. I'm a newbie so be nice. I'm considering buying a home sandblaster. I want to blast the cab and body panels on a 1984 C10. As I have been looking at sandblasters (Harbor Freight, Eastwood) they all say they require 10 cfm @ 90 psi. My compressor will do 6 cfm @ 90 psi. Does this mean I'm out of luck? Or will it just be a slower process with having to wait for the compressor to recharge and keep up? My compressor will go up to 150 psi. Thanks for any help.