As the error message says, your file is too long. Your'e using the RCTW format for ET. Delete the lines for teamwork, bravery, awareness, and camper.
Place all your custom bot files in the fritzbot/bots folder and make sure that you have set "sv_pure" to zero by typing it in the console (/sv_pure 0), or in your autoexec.cfg (seta sv_pure "0"), or set "Pure server" to "NO" in your Advanced Startup Menu.
For a list of custom bots that you can load as a group, make a file in your text editor called something like "myname.cfg" with entries like the following:
addbot axismed
addbot alliedmed
addbot mybuddy
and so on. . .
Place the file in your fritzbot folder. To load the bots, start the map, go into the console (tilde key) and type "/exec myname.cfg" That otta do it!