hi. having read your posts and lets just say slightly incorrect info on the pelop. war

i have some suggestions, i series:
sources
Primary Sources
this is good site for sources on the war and greek history in general, esp. Thuycidides, Plutarch (lysander, agis etc), as well as
Xenophon (Hellenica [personally i think the translation by Carlton L. Brownson, circa 1912-1918 is best] and the policy of the Athenians and the Spartans).
for hoplite warfare the link
Hoplite Experience
will give more info of the nature of the warfare, as well as some minor details on what the spartan hoplite actually looked like
Scale
the typical ragiment of the hoplite was usually 1200 men in strenth, as in this was the number usually deployed as a fielded force, or as a component unit in a much larger force. a sub unit can be considered to be 300 men; forces smaller than this were seldom used as this would severely limit thier tactical ability with view to doing damage to the enemy or even fighting in the hoplite scale. as such, it might be advisable to represent one unit, costing one population point when built (to reflect logistical support as well as citizen army concept) as 300 men who can rejoin a city, settle or be drafted.
at the start of the war, Athens alone had 300 ships, these were usually employed in groups of ~12, so maybe a scale of 1 to 12, where one ship can transport two regiments, ie 2400 hoplite or 8 units, at 200 men per ship would be realistic.
also, hoplite forces were seldom wiped out, as the heavy armour prevented real slaughter after a battle by weight and the exhaustion of the men after a fight in such conditions (see link above) and as such it might be advisable to provide four unit armies al low cost to reflect leaders and to simulate the afore mentioned points, as well as representing the 'rugby-scrum' nature of hoplite warfare.
with view to cities, the typical greek setlements nombered about 20,000-40,000 male and female inhabitants (i exclude slaves as the only add production, and cannot be cosidred to be active citizens, except poss. in Athens (policy, Xenop.) except for Athens, where during the war its population was almost a quater of a million in the city itself, and amost 50,000 in its sister city/port of pireaus. possibly can represent this with cities of pop. 10-20 for greece, and suburbs of athens inside its wall in a closely packed area representing the city, each making up the total number. to represent the grain from the black sea, special grain resource? at athens in side wall, with large pop paying taxes to represent thier riches, and reliance on the draft as in reality.
coming soon.....
Sparta - clarifications on numbers of men leaders, actual distinction in its society (i wrote this put accidently deleted it)
Athens - its armies, navy, the nature of the delian leauge (actually the Athenian empire)
The Allies - the lowdown
Technology - innovations over the course of the war
and anything else i think may help
PEACE