I propose we spurn this double-fish double-gold plains-hill river site and settle 1W for an optimal one off the coast.
Ok being serious now, having fishing and no land-food makes a 6-turn workboat a pretty obvious first choice, unless we think we need a warrior. I don't think we do need a warrior first as we can build one in three turns if we need to, and should have at least 3 turn's warning of any attack. Plus I don't expect us to be super-close to any other civs.
Tech wise my thoughts are:
* mining we need at least before we finish the worker, as the gold should be the priority.
* writing as early as possible.
* bronzeworking at least before writing or else the library will take forever to build anyway, creative or not.
* sailing when we have time to build a lighthouse, probably not straight away but maybe first after writing?
* hunting + animal husbandry can possibly wait, although if there's no copper around we will need some sort of barb defense.
* mysticism and friends we can hopefully skip for quite a while, being creative. I know there's some good stuff down this path but we can't have everything.
The ideal early capital will be 6 population, working fish, fish, gold, gold, scientist, scientist (then switch scientists for cottages once we have an academy and the happy cap is lifted). For this though we will need at least 1 more happiness (if I count it right anyway - 4 happiness for free and 1 from gold), preferably two if we've been whipping. If we're lucky we might find a happiness resource to cover this without a big detour down the mysticism line for a religeon or HR.
So, this turn, I would settle in place first, then move the warrior 7 (NW) to move away from the coast and reveal more, work the plains hill, build a workboat, and set tech to mining.