Time to give this one an attempt - hope I finish in time to submit.
Initial Thoughts
Flat grassland - second worst starting land IMO (worst being flat tundra, of course). Compared to jungle, it's faster movement and development, but there's even less production and no science payoff with universities. Hopefully, several expansions can go towards some hills. Low production means no shrines = no pantheon / religion unless I get lucky with early city states. Low production = worker problems and stealing takes longer on Emperor (compared to Deity / Immortal). Emperor = economy and happiness problems (compared to Deity / Immortal) since it's more difficult to rely on AI trades - might need to actively work at least one calendar lux in each city for gold and to slow growth.
Goal is a science victory, so I'll try for some sort of quick science win (I'm about average regarding speed science). I also like to try different approaches - since I'm comfortable with Tradition/Freedom turtle strategy, I'm hoping I can try a Liberty/Order approach. Typically (as noted by dumpstertrash above), huge maps have a lot of room plus unhappiness from number of cities is reduced a bit. However, I still need the luxuries, so I'll only go Liberty if I see several that I can get (at least five unique - hopefully more).
To help the Swedish UAs, maybe I can get a great general against a city state? Maybe I can do a xbow push against an AI neighbor (generals + expand + potential friends with other civs if we can fight the same opponent), but where would I get the hammers to build the army? Regardless, I'm definitely planning to open Aesthetics to generate more artists and hopefully musicians if I can get those guilds build. Will likely need to keep writers though for culture. Also, of course, since I want lots of DoF, I'll want as many Research Agreements as possible. Porcelain Tower would certainly help (as would early Rationalism finisher, but that seems like too much to ask). Oracle would help a Liberty start if I can reach medieval in time to avoid a classical era filler. With Tradition, I suspect the bonus policy would end up as an extra classical or medieval filler (only want the Aesthetics opener).
Turn 0 Plan
Like Raider above, I'd rather not settle in place, but out of the visible tiles, there aren't any better options IMO. I'll move the warrior 2 tiles south, and if I see some more hills that way, I'll T1 settle the triple river tile (Ring 1 deer, wheat, incense). If warrior finds hills and I decide to move the settler (SW to the wheat), there's a possibility I might choose to settle on the incense instead, but the tiles W and SW of the incense would have to be good.
