Best source to use to blend a bit better with the deleted scenes would be something like the Silver Screen Edition. Both versions of 4K77 are too clean IMO, even the non-DNR version, to match without doing extensive cleanup work on the deleted scenes. Unless you want to artificially “dirty” up 4K77 or Despecialized, but I don’t see the point when you’ve got the SSE available.

Grindhouse for ESB would provide an equivalent source for that. For ROTJ, though, you probably will need to dirty up one of your primary sources to match the deleted scenes, but the ROTJ Grindhouse would be your best bet to start off with. It’s much cleaner than the SSE or ESB Grindhouse, though.