Thanks for the very informative post, Simon and thanks for taking the time to write it. I'm going to build a spray booth out of some scrap lumber and am going to spray in the garage. I agree with everything you said and own a great painting ventilator mask.
Still one question. The time between coats. Does that include sanding between coats?
Or does one spray a coat, simply wait an hour or two, spray another, repeat, then wait 2 weeks or more for sanding, polishing, etc?