I need to paint a couple of livestock panels black and install them as a screen under my deck? The panels are 5'X16' and consist of 2"X4" rectangles. These are the type purchased at Tractor Supply and other farm stores. I have an airless sprayer and a Earlex 5500 if either of those would be handy. Any advice on how to clean prime and paint would be appreciated. Specific paint and primer product names would also be appreciated.