i would use SART.org and CDC.org clinic success rate data to narrow your search for a clinic.
i would call clinics and ask if they possibly perform family balancing.
note that Microsort collaborator clinics may have low success rates in comparison to other fertility clinics in your state.
if you're able to only use PGD (if you are likely to create enough embryos to yield normal embryos of the desired gender even without trying MS), you could use a clinic with notably higher success rates.