Something

;First bot (Funbot1) 
on *:invite:#: { 
  if ($chan(0) == 30) { 
    notice $nick This bot is full please wait while I'm searching for open bots. 
    msg [ss]Funbot2 Join $chan 
    } else { 
    join $chan 
    msg $chan $nick0 invited me to $chan
  } 

  ;Second bot ([ss]funbot2) 
  on *:text:Join *:?: { 
    if ($nick == funbot1) { 
      if ($chan(0) == 30) { 
        msg [rs]funbot3 Join $chan 
        } else { 
        join $2- 
        msg $chan If you want a join message, have it here. 
      } 
    } 
  } 

  ;Third bot ([rs]funbot3) 
  on *:text:Join *:?: { 
    if ($nick == [ss]etcbot2) { 
      if ($chan(0) == 30) { 
        msg [cw]etcbot4 Join $chan 
        } else { 
        join $2- 
        msg $chan If you want a join message, have it here. 
      } 
    } 
  } 

  ;Fourth bot ([cw]funbot4) 
  on *:text:Join *:?: { 
    if ($nick == [rs]etcbot3) { 
      if ($chan(0) == 30) { 
        notice $nick All the bots are full. Please wait for someone to part me and then invite me again. 
        } else { 
        join $2- 
        msg $chan If you want a join message, have it here. 
      } 
    } 
  }