I have used bullard painting equipment as an aircraft painter in the Air Force. I actually preferred bullard hoods over others because it kept my face, neck, hair and scalp protected while working over head such as doing prep work prior to painting. In addition to that, the cool incoming air feels good on you during warmer periods. Just keep in mind whether using stationary or mobile air pumps, the area where the air is being drawn into the equipment must not tainted by any type of industrial environment. It must have clean (relative) outside air supplied. Air Force painters have learned this the hard way over the years. One last note. Any breathing air system must have different hose connections than any other compressed air systems being used. IE. Your compressed air for painting must have different type connectors than your breathing air system. Normally you cant share your air source unless it has carbon monoxide detectors inline and you must do air samples every 90 days. Pain in the butt. Keep your sytems seperate and you will be glad you did. Hope this helps.
PS- we purchased our equipment thru our supply channels but I would start with McMaster Carr or Grainger. They should be able to help you.