Great work on the barbs!
The warrior-only defense seems to be working fine so far.
It is strange that we didn't encounter any barbarian archers.
I think we've reached the point when we need to make an important strategic decision: are we going to build the palace or the FP on the mainland. We cannot tell for sure now, but it looks like those islands in the north are isolated. If so, then moving the palace seems to be a stronger option. The cow/clams site looks good, but even if we settle there, decreasing the upkeep of just two cities doesn't seem to be worth it.
In this case we can indeed postpone learning CoL as Lexad said and concentrate on MC/Machinery. GP farming should be planned carefully, ideally we need 3-4 GSs by the time we learn machinery & kill all rivals on the starting continent so that we can immidiately lightbulb to Astronomy (1 for optics, 2 for astronomy & maybe even 1 for compass).
A city with just a library gives GS #1 in 25 turns, GS #2 in 50 turns, GS #3 in 75 turns. So one library city gives 3 GSs in 150 turns, 2 library cities give 3 GSs in 100 turns (first city generates GS #1 & GS #3), 3 libraries give 3 GSs in 75 turns. Judging from the previous game we will need those GSs by about 800AD which is 160 turns from now, but we may need it much sooner, maybe in 120-130 turns from now, depending on the map, so we should propable start 2-3 cities working on GSs before 1000BC unless we get further information. We should also watch out for the Oracle so that we don't generate a prophet (if we really want to delay CoL).
A big problem for our planning is that we don't know how many civs are on our continent (or can be reached by galleys), actually we don't even know whether we need Astronomy or not, we are just suspecting it.
We need a coastal city produce a boat so that we can tell for sure, but I don't see this happening in the near future.
OK, that's it for the Grand Strategy, now onto the tacticall stuff:
We need to decide what techs to learn next and we need to decide where to place our next cities. We need to expand fast now to set up a nice production base for building the palace, the Oracle and enough units to protect us from barbs and to kill Spain & whoever else is on our continent once we are strong enough. I think we should build several settlers and enough units to protect them before we start working on the wonders. That will slow down our science, but we should be able to learn the most necessary techs and once the palace is moved we will research very fast again. I cannot access the save now, but I should be able to do it at least once before going out of town, so I should be able to propose a dotmap. But out of my head I can tell that we need a city near the copper, a horses/sheep city in the SE, a wheat/sheep city in the SW and a coastal city for the second GP farm.
EDIT: I am not sure if we need IW now. Maybe it will be better to learn Writing next and the pottery (for cottages, granaries and so that we can take MC as the Oracle tech). Math is also good since there are a lot of trees. And of course we need to switch to slavery.
It was not so easy to see that forest was disappeared from that tile. 
Each whip gives 1 unhappy face, but each unit will give +1 happy face with HR. So whipping won't be limited by anything. With 4 food resources it'll be a production powerhouse even while running 2 scientists. Once we learn Astronomy we can move those units out and attack somebody. The city will then be totally unhappy, but it won't matter anymore. Of course we'll only be able to build catapults (unless there is iron on that rock), but that is still quite usefull. We may also colonise the cow/clam island and do the same there.
