Thoughts for my turn set and beyond
Leave Toto unpromoted, planning to move SW and heal up. Apply Woodsman I if 70% health or lower. Then head SW.
If we are fairly isolated, then we should be expecting Toto to be able to do a quick jaunt around the peninsula to the SW, and head back north via the hill west of the lake.
Note that we have four of the five calendar resources, which sounds like a good target for our mid-game happiness source. Our food resources are nice but not overwhelming, and when combined with this source of happiness, it does not look like a good idea to run slavery, and certainly not before we have granaries to double the effectiveness.
So far, settling our second city around T42 on the plains hill where our warrior is now looks pretty good. We can have a worker chop some forests heading south around the capital's lake to be in position to farm the wheat, and with the T50 capital border pop we'll be in position to mine gems and camp deer according to taste. This works pretty smoothly with delayed Hunting.
If we had to choose a site for the third city now, I'd suggest SW of cow. This gets both seafood and will be able to work up some cottages for the capital (and itself). Settling 2S of corn to be on the river seems misguided to me. We have +7

just lying around and +2

more with a granary, so fresh water doesn't gain much. We get four river cottages to the east either way. The marble and Ghill

is more than offset by the clam

and faster growth.
However, we may find more desirable sites to the north. I think we should aim at 2-3 warriors before the second worker and first settler, so that we can be sure of being able to explore enough to the north while securing the western city site. Since the details become relevant in 5 turns time, I will work on some now.