The BBO InterCity League starts on 16 October. Matches are played every Wednesday starting at 1945-2000 BST (2045-2100 Paris, 1445-1500 New York). Full details at
http://bbo.splitbridge.hr/. It is a fun league and I'm sure cobRAD would welcome a BBF team.
Based on my experience of playing and running online teams, competitions and ladders, you definitely need a fixed time and date to stand any chance of success. In terms of BBF-based events, I suggest you find a few people to captain squads and devolve much of the organisation to them.
Finally I've been running a series of team matches over the last month for those involved in this season's international trials (England, Scotland, Wales, NI, Ireland). I did take on all the organisation and it was greatly helped by using doodle.com to discover people's availability (and interest). I fixed the dates and then invited PAIRS to mark their availability. It worked very well. When I didn't have a multiple of four pairs I just made a decision over who played, but I'm quite a pleasant dictator so it worked. But it was a considerable amount of work.
Good luck,
Paul