Well, you can try to script all by urself, its not that hard, heres the instructions
http://www.elitepvpers.de/forum/lin2-exploits-hacks-bots-tools-macros/175610-l2w-oog-ig-bot-guides-scripting.html
I think U must script, so that when buffer does the buff and when buff ends on him, he invites ur other player, buffs again, leaves... idk how to do that, not a scripter, but i think its possible with that kind of technique