If you are wanting to film these girls yourself and try to sell the content, you will need to do a few things first. First make sure you have all the proper forms such as model releases and read up on the 2257 laws. Also, you need an understanding of the market for the type of content you are filming. Although there are a few companies out there that will buy very amateur content (bad lighting, angles, etc), most like to buy content that is at least somewhat professionally done. So, you will need the right kind of equipment; professional lighting and good cameras. If you have never shot content before then you are taking a huge gamble that you will ever sell what you shoot. Even if you do find a buyer and all your documentation does not have the t's crossed and the i's dotted, it will be useless.
You would probably do better to refer these gals to other producers and pick up a referral fee. Most producers pay a set fee or a percentage of what the girls shoot for. There are a few producers in the Tempe area as well
