I’m personally not a huge fan of reusing old music unless I have to (especially in this case where the pieces are somewhat similar), though it does work well.
Have you put any thought to rescoring the next bit with John Williams’s alternate piece for that scene?
I have no qualms reusing prequel music since I don’t consider them in my own head canon. So this probably mainly applies to people like myself who don’t really watch the PT in marathons.
I’ll be using prequel music in the Last Jedi too. My idea is basically to utilize the best music of the PT in moments where the ST just has better scenes and deserve better music. So I already have around 3 TLJ scenes that will be rescored with prequel music.