My arguments for the site outlined in green - known also as "A1" - are
elsewhere on the forum.
If you're still undecided on where to settle, I have respectful rebuttals to some of the arguments presented by honorable Swissempire and citizen Robboo.
"We need early ocean access". I concede this. But Licentia is far from landlocked - we have shores stretching in every direction, as far as our scouts can travel. Finding coastline is the least of our worries.
Licentia will be a sea power with or without our second city being a port. And I would say it is best to have a city for a productive purpose
and a positional purpose. Let's settle port cities that will become mighty shipyards, not drab backwaters.
"Site A, YELLOW, places us further from the Mongols." Both we and they are masters of horsemanship.
A tile's distance further won't deter them if we misstep and find ourselves attacked by them.
"Site A, YELLOW, gives us instant access to Horses." Instant access to Horses, yes, but it will be
only in a port city site that can't build Chariots or Horse Archers quickly and may never be able to do so without land improvement technologies of which we only now dream. By the time we're able to connect our road network to
either site, site A1, GREEN's cultural boundaries will have expanded due to the unifying richness of our creativity. Part of the glory of Licentia is that we're able to settle a tile away from resources and be confident in their use; we should turn this to our advantage and attempt to encompass within our cities a balanced mix of resources and regular ground.