I took my 2nd account Classical right to the limit on upgrades - except farms & caravans - useless things are at the minimum to make Timed Quest guy go away. Still have some in the store.
But Classical didn't have enough firepower, so went Medieval, ditto, so now Gunpowder - can do some damage with this army. Going to max that (except farms & caravans of course). Doubt I'll upgrade to EA. Didn't buy a starter house - no need.