If done by a true professional and each coat goes uninterrupted (setup/cleanup wastes paint) on all parts at once a Quart just might be enough. But I would also furnish an additional pint for peace of mind for 2 coats of color. 3 coats I would get 2 Quarts. Especially if it would take awhile to get more if needed. If it's a 2-part color less is generally for the finish color.
I can tell you with absolute certainty how many rattle cans it would take from ColoRite - WAY TOO many!
I went that route with my fairing & pods. Results were excellent, but what a ton of work it is.
The right side pod actually got wet sanded and buffed again 'cause I got tired or lazy the first time.
