SE maps? Oh you mean for RTCW. Sorry but I stick to ET. Crapshoot may know. You can reach him by pm or over in the
Omnibot forums.
As to balance you could try varying the teams by changing which bots and how many are added. You can do this manually (/kick allbots, /addbot) or with a
bot config file.
BTW the RTCW FritzBot wiki is
here (username:wiki, password:nospam)