So possible grand strategies
Go for a religious diplomatic victory
Expand, build the great wall, Oracle theology, spread hinduism to select AI, build the AP, declare a holy war against Buddhist AI target, rack up diplo points from shared war, use espionage to convert a few AI to hinduism get them to like us even more, wipe out Holy war target, spread hinduism to any remaining AI (possibly need optics), and win.
Go for military victory
Expand, build great wall?, Oracle Construction?, avoid teching meditation, civil service, theology, sailing, fishing, bulb machinery and engineering with 2 great scientists, conquer the world with crossbows and trebs, fend off combined might of buddhist coalition by converting select AI to hinduism via espionage, cripple AI target by taking key cities and possibly creative city gifting peace deals, expand until ready to finish off crippled AI, win via domination.
issues can't tech theology until we bulb machinery and engineering (and self tech/trade/steal writing, math, wheel, alphabet, aesthetics, iron working, metal casting), and so the risk of a Buddhist AP is a real one.