Re: choosing a paint sprayer
I would recommend renting over purchasing because the quality of most DIY sprayers is pretty poor.
For paint, I recommend sticking with name brand dealers such as Kelly Moore, Sherwin Williams, etc. Stay away from the box store brands as you’re paying top dollar for less that good quality paint.
You may or may not need to prime, depending on the condition and type of paint used originally and what you intend to use now. You will want to prep the surface before applying your new coatings, which generally consists of washing, repair of damaged areas, cracks, caulking around windows and trim, etc. If after this the surface is chalky or you have bare wood, then priming would be recommended, otherwise not a necessity. I would also recommend that you spend some time researching painting techniques, operating an airless paint sprayer, and general paint prep procedures for exterior work.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!