Congrads brother don't worry as long as your confident with the look others won't even reply to it.
I shaved my head completly in winter and was afraid that my head would look to bright. But there is always a little shadow and it looks pretty good.
Just shave all off and see hwo it looks ... I guess you like the look ... and if now ... after less than a week you have the 1mm back.
Congrats on your decision. I know it took me a long time to go for it, but I've never been happier. I hope you like your new freedom, it is a very liberating experience!