It might come down to who can stay awake the longest at this point... As it should be. RS is a game of time. The person with the most freetime usually always comes out on top. (See my prayer records)
To join 3bo you need 110+ Dungeoneering to join, or for a Provisional rank, submit 3 pictures of yourself keying a large dungeon in under 18 minutes. These floors cannot be abandoned floors. The world is 105+ if you want to join 3bo teams.