You mentioned you were also open to Mediterranean type donors - hate to stereotype, but from the area where Cooper is located (Philadelphia/ south Jersey/ proximity to NYC and the Jersey shore) yields a lot of Italian descent donors. You have a good chance to see that reflected in the donor pool/ donor embryo pool there.
Our donor was Polish there were none that fit that genotype/phenotype we were hoping for, so we brought a donor from elsewhere (from a part of the country where there were lots of Polish & Swedish populations). In NJ not so much.
Donor embryo should be fairly inexpensive, there are waiting lists though so I would try to get on lists ASAP.