XF 1.4 Profiles, Meta

So I want to adopt the growth hacking technique of LinkedIn and try to make my member profiles on my XF powered forums give members a good name on search engines. I have an idea of how I want to do it but am trying to figure out how to do one particular idea - so I welcome your feedback :)

Basically I want to create a custom profile field that is a short headline of the member's profile, I want their profile page to use that short headline as the description for meta-description tags. Possible? Too much work? What do you think?