Your YSeq results are quite impressive.? You now fall into a "so close, but so far" scenario.
FTDNA prefers BY5715.? ?There are nine people.? There are two subclades of BY5715 and you could go 3 to 4 levels deeper.? ?The following link is pre-set to BY5715
You get the names of your BigY matches and your non-Matching Variants.? This should include some or all of the nine plus others on nearby branches.? You can visualize these matches and SNPs on the Block Y tree.??
Your Y37 list will get refined to a Y111 match list.? That could be helpful as well.??
I think you have plenty to gain from a BigY, but that's just my opinion.? ??
FTDNA will likely have sales centered around Roots Tech at the end of February.? Or maybe sooner.? ?