I like a lot of Lin-Manuel’s music, from what I’ve heard anyway, but this song feels off to me, in the specific way that parts of JJ’s Star Wars aesthetic feels off. It’s difficult to describe exactly, but basically it’s a look and sound which is blunt, rounded off, obvious, in-your-face, etc. In contrast, the aesthetic of the OT was quite alien, with a lot of striking sounds and objects which nevertheless resisted obvious interpretation. This is one area in which The Last Jedi fares much better. But anyway, the song feels like a good fit for JJ’s aesthetic, but that’s why I have issues with it. I hope that made some sense.
I know you mentioned using the other track Miranda wrote for the movie (“Dobra Doompa”) instead of “Jabba Flow”, but after listening to it again I do think it might fit that vibe you are going for. Maybe put it in there and give it a try, and this way you are still using Star Wars music, too.
https://www.youtube.com/watch?v=UdAD9VZta3o