minniet mentioned many good points. It is an absolute that you use an ART attorney for yourself and your contract AND as well, your donor will need her own ART attorney (which you will pay for) so everything would be above-board. Do not use an attorney who does not specialize in this field. The laws in each state are changing extremely rapidly and you want to make sure that you and your family, as well as the donor are protected.
What type of "application" will you have any prospective candidates fill out?
As well, how do you intend to verify any information you are given? Will you do this yourself? then you will ostensibly have no anonymity between yourself and the donor. Is that something you want?
Minnie is right--your clinic will handle all FDA requirements and informed consent but you want to have a good idea she is going to pass:
A psych consult is imperative--it is an ASRM recommendation but it is shocking how many clinics skip this. And it needs to be a psych consult done by a therapist who does this for a living- you can find someone (hopefully) through the clinic or you can check either creatingafamily.org or resolve.org to find a specialist--the same for an ART attorney.
Good luck in your search for a donor!