I think your most important task here is to identify the core theme of your epilogue. Is it that Rey is the legacy to the Jedi? Rey is the legacy to the lessons Luke learned/the force? Are we seeing what happens next to the OT main characters? How the Galaxy changed as a result of the victory in ROTJ? That a permanent victory was achieved after ROTJ? That there will always be a struggle and always be someone new to pick up the challenge? Is it all Palpatine’s story (probably not)?

What are the themes from the OT that most resonate with you? - projecting that forward into the ST, which plotlines best support and continue and conclude those themes?