I didnt disband ANY unit as the Romans...only the useless (for their upkeep) fleet...
I control all Italy and Sicily and my economic problems are LONG gone...I just use 1 cav unit per army and 80% of my legions are Principes...which btw rule, their pila and sword are perfect for rushing the opponnent while the 2 cav units (equites+gen) are used in cleaning the ruting enemy...
Also principes are better than Hastati AND Triarii (who have the useless phalanx and cost alot) for just a slight upkeep cost...
I recommend to ANY EB starter to pick Romani as the most viable choice...

Hellenes