I use bullets with a skeleton in a very disorganized way, actually. I'll fill in information here and there throughout my profile (sometimes phrases, sometimes paragraphs I want to include) and make quick notes in sections of things I want to talk about. Then, at the bottom of the page I have bullets for when I get stuck or points I want to hit on that are more generalized. But I always make things too complicated.
Free writing is definitely a good suggestion and way to get all your ideas out.
Either way, good luck with your profile! I'm sure it'll be great - you're obviously spending a lot of time on it. <3