I just finished with book 5, and I must say you did an excellent job combining both mandalorians, I especially liked how you tighten up the final battle and removed the child.
One thing I think needs some work, especially if you want him closer to the legends version, is to trim some of his dialog forcing the child to choose.
Luke would never close the door on a student nor forbid attachment, especially since it was his own attachment to his father that redeemed him.
Otherwise it’s great work.