In a stunning killing spree (about 16 hours after I beat Thaxl) I "hit" the Kangster, Shangy and his "friends", and Firkraag in under 1 hour. (real life time)
Kang was easy; I had Jahiera use a Prot. Magic scroll, stood her next to the Kangster's Demi-Lich form with the Staff of Rhynn+4, and had Aerie beat the hell out of him with Melf's Minute Meteors. I believe the Staff Of Rhynn didn't do much because I counted Jahiera's damage total against Kangaxx and found a 4. Aerie did the beating, (and the kill shot!!

) and I only had 2 meteors left. Lucky me, just in the nick of time.

(I only had 3 Meteor spells)
Shangy and his friends were a long, but overall, not very hard battle. I positioned all my chars who could do ranged attacks on the left/north (in 1st person/3rd person perspective) wall, hid my main character behind them, set up some traps, and had Jahiera (under my second and last Prot. Magic) walk in to the big room. Shangy did his thing, then teleported straight into my traps and instantly died while Jahiera retreated back into the small room. Because of the position of my chars, only the vampire and fighter could see and come after me, so I toasted them with Angzamar's Scorcher (I love this spell!) and Magic Missile. (this one too

)
Then Jahiera walked into the main room and started meleeing Vaxall the Beholder. He used only Magic attacks, so he would be toast, but before I could get Vaxall past "Barely Injured", Layene the mage Time Stopped and did Meteor Swarm + Gate. That was exactly what I was hoping for. The Pit Fiend got nearly instantly killed my all the Meteors, AND, Vaxall went to Near Death. I finished Vaxall and ran Jahiera into Layene. Again, all magic meant Jahiera didn't get a scratch while my ranged attack characters wailed on her till she died.
I had some great gear about now. I gave Minsc the Ring of Gaxx and Nalia got the Staff Of The Magi and then I went for Firkraag.
Traps, traps, traps. Had Firkraag to Badly Injured straight away and Angzamar's Scorchered and Magic Missiled him (Seriously: best spells in the game) till he died. Or, well, nearly. He knocked everyone but Minsc (who was Berserking with Dragonbane +3) and Yoshimo (Save) into Greater Malison, and Minsc just beat him up while Yoshimo got the kill shot.
Lol, because of the traps and luck, Yoshimo got Thaxl, Firkraag, AND Shangalar while Aerie had Kangaxx to her name. Amazing stuff.
And in the last two days I've been doing ALL the quests. Really. All. There's nothing left for me to do 'cept kill Bodhi and get to Spellhold.
*Sigh* I hope I'm up for it. I have a Lvl 16 Swashbuckler, Lvl 11 Fighter/Lvl 13 Druid Jahiera, Lvl 13 Minsc, Lvl 16 Yoshimo, Lvl 11 Cleric/Lvl 13 Mage (I think) Aerie and Lvl 12 Nalia. And away I got to Spellhold! (Eh, gotta kill Bodhi first. THEN to Spellhold.)