Yeah, that's what I did. My whole party was Chanted and Hasted, and each was equipped with either a Necklace of Missiles, Wand of Fire, or Oil of Burning. I launched those suckers right at the edge of my Fog of War, paused, and launched a 2nd round. Everybody on the other side was either dead or panicked.
It took 2 reloads to do it, though....some of their archers were still able to attack (maybe they went Berserk), and for some reason they insisted on shooting Coran. MAN, those guys have low THAC0 if they can shoot through the Ankheg Plate!
Casting a couple of Webs at the middle of the board before you let loose with the offensive spells wouldn't hurt, either. Web won't make the other guys attack you because it doesn't actually do any damage.