If you have any connections in the auto repair industry, or know someone who may, you might be lucky enough to be able to use someones spray booth on a Saturday. I dont know what the going price currently is but it used to be roughly 1 carton of beer. Allowing for inflation in last quarter of a century, and adjusting for international exchange rates & wind direction..........maybe somewhere nearer......say....a bottle of scotch. Glenfiddich, of course
Start befriending your local panel shop foreman, Tony! Then, problem solvered!!