Congratulations! I'm no expert, just a fellow applicant, but my impression is that Oxford is seen as a great school and offers you similar chances at postdocs and faculty positions as top US programs.
I don't think you need to worry about seeming too UK-centric, if that is your worry.
2) sounds quite bad to me. I think 3) only makes sense if you will do something in the meantime that will make you significantly more competitive, and I can't really assess that factor without more information.
neurosoc got a reaction from sociopolitic in UK PhD or re-apply?