Darius' army at Gaugamela in RTRG/PE?

[Gabriel A]

I've decided to try and to use the Parthians to create an Iranian Empire along the lines of the Achaemenids.

This means I am abandoning the horse heavy armies of Parthia for large swarms of light melee infantry (sparbara, cyrtians, etc), peltasts and archers, and a few units of heavy infantry mercenaries. I think this is roughly correct.

But in terms of what Darius' specific Order of Battle would be in game terms is extremely difficult due to most differing accounts of his forces.

http://en.wikipedia.org/wiki/Battle_of_Gaugamela

I am thinking along the lines (using 19 or 20 slots)-

General x1
9x Peltasts/Javelins/archers (mostly Javelin/Peltasts)
4x Light Cavalry (javelin mostly, some archers)
3x Persian Spears/Sparabara
1x Greek Hoplites (if possible, if not phalangites)
1x Chariots or Elephants, Chariots preferable
1x Heavy Cavalry

This seem ok? I may use this for my main army, with smaller versions of this being my regional forces.

[Companion Cavalry]

He had more spearmen than that maybe 6 units and tone the javelineers

from nine to five

beyond that, looks good