Like Guestage_87, I wouldn't recommend a virtual season, even though I'm doing one and I'm not saying this because I'm afraid of competition. It's great fun, but a lot of work, and you can't do it by yourself, good writers are really scarse, even BB's official season 8 has as far as I know, only like 3 writers so far... and yet, they have a database of about a 1000 members. So unless you really want to write it all yourself.
Plus, since there are already so many of them out there, that it's hard to stand out.