Oh I dont have a lot of time to help, but I have ideas and advice if you want. And your tiny group can be as big as you want it to be depending on how much work you want to put into it.
If you wanted a 1,000 member group like BABA you could do it in 8 months, but a lot of people dont like the idea of actively recruiting members. i do it mostly because I like trying to help new members.
As far as what you can do to help in BABA, you could:
-Play the battling games like King of the Hill or Mayor of the Mole Hill
-Be agym leader or just earn badges
-Battle against other BALD or BABA members and report the results in the battlereporting thread to go into the BALD battle rankings
-Make pokeGTS links to go in our poke GTS library
-suggest a new thread in the BALD NEWS thread.
-become an official BALD citizen