I'd take the warrior you have on the forest to the south and move him NW onto the desert hill, then if you don't see any barb animals around move him N and then NE onto the other desert hill to peek at the vicinity of the crabs. Then he can move back to where he is now - that's a good spot for him long-term, but it'd be nice to get a look at the vicinity of the crabs since there's a small chance it affects where you put your second city. The warrior who just finished should immediately head out towards the horses. You already see horses and a lot of green land, there's the possibility of a crazy-good city site out there. Plus long-term he's probably gonna want to be in that vicinity to keep barbarians from spawning out there. Try to be as cautious as you can with his movement while making sure you do explore that territory before the settler finishes in about 10-11 turns.
@krikav is right that more often than not, losing 1 food or hammer in exchange for 2 commerce early-game isn't worth it. On taking a look at the save, this might be an unusual case, because your pasture is finishing next turn. Which means if you stay on gold, your worker finishes in 6 turns and BW finishes in 7, perfect. Switching off gold until the gold mine finishes, then switching back, might cost you a turn on BW; I'm not sure. If you were trying to really optimize the heck out of this game you might try to figure out exactly how many turns you could
not work gold while still finishing BW in 7 turns and get some extra overflow hammers out of the worker onto the settler. But just staying on gold is fine, and staying off gold
might not be fine (I'm not sure).
Turn 25 without meeting any AIs is fairly late, I'm starting to wonder if you might be in isolation this game. Does this map script do isolated starts (no other players on the same landmass)?
I think the next set of moves is pretty clear here. Do a bit of scouting with your warriors, get the gold mine up. Build the worker, move it onto a forest (I'd probably go with the one SW or NW of the city). Finish researching bronze working. That'd be a good pausing point, as soon as you know where any nearby copper is and are about to chop out your settler.