As someone who has organised a few small dos, I know that any do involves a lot of work. The recent *A megado required an enormous amount of work (many hundreds of hours) and an enormous amount of goodwill by various sponsors (ie you'd need to have very good contacts).

If you are serious I'd suggest you talk with one of the organisers of the *A megado first so that expectations are realistic. That said, there may be others in FT who can help assist (the *A megado had 3 organisers plus a number of others who provided some assistance behind the scenes).