Try to hook up with the YMCA in your area, they might be able to support you.
Other than that, start with the bare essentials and add to it as your program grows.
A word of caution, many people are all Gung Ho when a plan like yours id proposed, but when it comes time to put the money where the mouth is a whole lot less show up to participate! You might only need equipment for one or two students at first
(hey, new smileys, how come I missed that...0