If someone is trying to use a BTL to get into law school, and needs to assume they will look at the transcript even if they normally don’t, it would be good to have some credits for writing courses, basic American history, and basic social sciences. These can always be picked up from an accredited online university (such as University of Maryland’s University College or Western Governors University). A bit of experience working in a law office might help. Grades from a yeshiva don’t count for anything.
I’ld really suggest aiming lower and going for a less than elite school that offers liberal academic scholarships and lower tuition (particularly one’s home state university). The non-elite schools rarely lead to a “Big law” job, but most frum kids really aren’t on track for that “bullseye” to begin with, and the non-elite schools are just as good for the “build up your practice” in the less rarified world of neighborhood law – and you don’t want all those debts.