Sounds like you are on the path to being a SBG!
Your buzz looks good as the others have stated. Take it down to #1 for the summer, perhaps even go no-guard for a week or two at the peak of the heat. That will give you a good idea of how you will look bald. You might just want to continue and shave it after that. The smooth feel of a shaved head is extremely nice. A bald head on a guy is very much in style these days. There is no problem being bald by choice BBC.
Hope you at least give SBG a try. Keep us posted.