Most networks ask "200 views per day" so if you have 200 vpd, you'll most likely get into most networks. 100 views per day is and OK start.
For example, since you have about 519 views per day RPM might offer you an ok contract, apply and see what they offer you. You could partner with ZoominTV (200 vpd) , Fullscreen (unknown requirements, but they'd accept you) , those are just the 2 networks of the top of my head.
To answer your original question, Appy to RPM and see what contract they offer you. If you like it, take it. Don't like it? Grow your channel some more and then see if you get a good contract with whatever network you apply with
Good luck!