Don’t dress as the Doctor. I mean, not because you’ll be exterminated, but because nobody will recognize you. Because Clara deleted everything about him from the Dalek’s core… server… data… something.
Though I suppose if you must dress like the Doctor, you should do it as Meghan Murphy proposes in her series of daleks dressed like all eleven Doctors. Interested in a desktop background featuring all of them? I thought you might be. She also has an unrelated webcomic that’s cute as a button.