I'd suck at pulling off any type other than my own. I think I could probably pull off INFP or ENTP the longest. At least with INFP, they share my auxiliary function, which is what people see when you interact with others. ENTP has dominant Ne, I have auxilary Ne, so probably not as much of a stretch for me as trying to emulate a dominant Fe type.
5w6 or 9w1 sp/so/sx, I think