[Thrar]

Sounds like a lot of *ouch*!

You'll need a source for improved haste somewhere, 4 archers and 2 mages (wild mages for Nahal's) might be more effective I think. 4 archers with improved haste is equivalent to 8 archers without, and the mages offer other nice things too of course.

Regarding the generic archer as a fighter kit, it's part of tactics, not ease-of-use (which has been merged into the G3 tweak pack anyway). With that, you might even start with 6 archers (at least two fighter ones) and dual 2 of them to mages at level 13 or so.