as large a tank as you want to carry... the larger the tank the longer the uh ho time... as for the high temp paint look for something like a tractor / commercial engine paint... it would be designed for prolonged outdoor / sun exposure due to its intended use... as for the filter .. i'd have to do some mining on the internet... i have been looking for a pink camoflage welding shield as of late for my daughter... she is taking welding classes and her mother told her if she was in the top of the class and made all A's and B's we would buy her what she wanted..... little did my wife know that it would have to be custom made.... but if anyone comes across one let me know....
quick search brought up this one..
https://www.filtertechs.com/shop/pro...61738de6dab794
the inlet filter is more or less a dust filter...
the tanks are cool !! just put a valve on each port and a quick connect and add hoses as needed !!!!