Yes, that's WAY more than enough.
Fwiw, I used only 1 quart to paint my entire frame (inside & out), front suspension, bumpers, driveshafts, both axles, and underside of truck cab (all in 1 coat). So 1 quart goes pretty far. That does not incl. truck bed. I used a paint brush, not a sprayer. See
http://imgur.com/a/CKVUo