UB-SwordBlaster

I already finished my playthrough of Pokemon Y years ago, but I'd like to revisit the story -- beating all the Gym Leaders, confronting the villain boss and such once more. However, if possible I want to keep my current Pokemon, items, customization clothing, OT including all the IDs. Is it possible to pull that off with PKHeX, and if that's the case, which checks or options do I need to go through?