Just bear in mind that if your spraying at home in a domestic setting celly can be almost as bad for you! You could also go with a synthetic , sometimes called truck coat, it goes on quite thick but gives plenty of options for flatting back and polishing once it's fully cured.
With the heating to find blisters you can also use an infra red lamp and just move t around the car panel at a time, might be easier if doing it at home.
With spray gear I wouldn't get too fussy about the gun, don't buy the cheapest but definitely don't need to go top shelf either, you can spend a fortune on a gun but if you are still learning you won't see the benefit.
Don't rule out some of the newer HVLP kit either, not used one myself but know a couple of people who have tried them with good results.
HTH
Mac
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