You claim that the coastal site 1 would take more worker turns to hook up when in fact the difference is nothing compared to the coastal advantage of the city. Unfortunately our warrior is busy scouting out India, but if he weren't, we should look at what's off the coast there -- if there's a fish of some kind, once we get a harbor there that's a +3 food tile (+4 out of despotism).
All in all, I think we would get more use out of 3 mini-settler factories (Camelot and sites 1 & 2 in my picture) than from a single dedicated one. We could probably go warrior, settler in the inland city, and boat, settler, warrior, settler in the coastals. The only disadvantage is having to build three granaries.
Also, even though we may fill up our space rather quickly(depending on what's NE), we can use our boats to go around these civs and possibly fill in other gaps even after our original area has been filled.
So, in the most recent image, if you move (1) one tile SW and (2) 1 tile W we could end up having 3 seperate combo pumps going within 20-30 turns or so, or less, depending on where/when we build and/or capture workers.