Reconstruction implants or diep flap

I had mastectomy on 9/27/2022 with nipple sparring and expanders. I’m currently going thru radiation and will do reconstruction after skin is healed. I don’t care much about implants and more inclined for flap.
After mastectomy, I had anxiety on whether I should have opted for no nipple and skin sparring and how much that would impact recurrence. I was assured it wouldn’t make a difference but learned there are some breast tissues left as they can’t remove everything. Since I’m yet to do reconstruction, part of me wants to remove the nipple/skin and do diep flap.
I would appreciate to hear from those that have done implants or diep flap. Also thoughts on removing the original nipple and skin? Not sure if I’m being too paranoid about the nipple sparring.
I had her2 positive stage 2, did 6 treatments of herceptin and perjeta. Mastectomy, had 7 positive lymphnodes, currently doing 15 sessions of radiation and going thru 14 treatments of kadcyla.