JD-Next: My Way Out of the LSAT 150s?

Considering JD-Next as an alternative to the LSAT. My targets are mainly T35, especially Fordham, Vanderbilt, and Georgetown.
I have a 2:1 from the University of London and work experience in investor-state disputes for the Government. I’m frustrated with the LSAT and currently stuck in the 150s, so I don’t want to keep gambling my applications on a score I may not be able to improve significantly.
I’ve seen people get scholarships through JD-Next, so I’d love to hear from anyone who has used it for T35 admissions.
Is JD-Next actually a viable alternative, particularly for scholarships and schools like Fordham/Vandy/Georgetown?