I'm getting pretty excited about this project, and I'm starting to go through some old wargaming miniatures of mine. I've been working on some Celts lately, they're turning out well. But I think I should definitely get some Picts, thanks to Reis at Geek Orthodox, for the suggestion!
I've decided to go with Wargames Factory's Numidians, for a Shemitish army.
I own some of WF's Celts and Romans, and they're pretty sice figures. The Numidians are pretty basic, so they'll be pretty easy to convert. Hopefully they'll come out with some mounted troops as well.
If you haven't seen Wargames Factory miniatures before, feast your eyes on these!