Pre-Turn: We have 20 horsemen and 6 samurai. If I march on Greece now we have to go through the swamp and it will be horse against hoplites (one way to get our unit cost down). If I wait for the samurai who are released from MP duty next turn it will take them 6 turns to reach the front. Better to wait the full 10 turns for our Maya deal to end then go right through them and hit Greece from the east which avoids the swamp altogether. Meanwhile Ill upgrade as many horses as I can.
Upgrade a couple of horses. Hit Enter.
IBT The Celts disband their worker near Augustodurum
Tokyo: Samurai => Samurai
Osaka: Pikeman => Pikeman
Engineering => Invention
Turn 1 130 BC: Make peace with the Celts for 7 gold + 6 gpt. Turn off research. Persia has the Republic but they want 3 techs for it. Stay with Monarchy for now.
IBT The Celts are building the GL

In their only town!
Edo: Pikeman => Pikeman
Turn 2 110 BC: Start roading towards the two southern Maya towns.
IBT Kyoto: Samurai => Samurai
Osaka: Pikeman => Samurai
Turn 3 90 BC: Upgrade another horse. KT next turn.
IBT Tokyo: Samurai => Cathedral
Edo: Pikeman => Cathedral
Satsuma: Knights Templar => Cathedral
We enter our Golden Age
Turn 4 70BC: Switch Kyoto and Osaka to Cathedrals also.
IBT Lugdunum: Pikeman => Aqueduct
Turn 5 50 BC: Upgrade a couple of horses.
IBT Kyoto: Cathedral => Samurai
Osaka: Cathedral => Pikeman
Agedincum: Temple => Trebuchet
Turn 6 30 BC: 2 more horse upgrades.
IBT Tokyo: Cathedral=> Samurai
Satsuma: Cathedral =>Sun Tzu (pre-build for Leonardo)
Edo: Cathedral => Trebuchet
Camulodunum: Temple => Barracks
Eboracum: Temple => Barracks
Turn 7 10 BC: Turn off lux. Lagartero (Maya) has grown to 2.
IBT Kyoto: Samurai => Samurai
Alesia: Temple => Harbour
Osaka: Pikeman => Samurai
Edo: Trebuchet => Trebuchet
Verulamium: Temple => Barracks
Turn 8 10 AD: Start moving attack forces into place.
IBT Entremont: Temple => Barracks
Tokyo: Samurai => Samurai
Edo: Trebuchet => Pikeman
Agedincum: Trebuchet => Pikeman
KT produces our first Crusader
Turn 9 30 AD: Upgrade the last of our vet horses.
IBT Kyoto: Samurai => Samurai
Edo: Pikeman => Pikeman
Camulodunum: Barracks => Pikeman
Turn 10 50 AD: There are assault forces in place outside Lagartero, Bonampak and Tikal. Our main force is in Camulodunum. I havent upgraded the catapults but that town gets a barracks next turn if you want to wait. The Maya trade agreement ends next turn. Im not sure if that means you can cancel it this turn or not. If you can then the attack could roll in straight away. Research is still off but unless you need the cash to upgrade cats it can be restarted now.
Screenshot to follow.