SoZ as backup wont work at all. I have the collosus finished earlier than i research masonry. Let alone math.
Before we have math, we have probably over 600 shields worth of production and all the wonders that can be available at the start have been build or may already be close to producing double culture.
Edit: If we want SoZ, it will also be a goal to go for. Before ANYONE has math, all wonders will be build. So if we want SoZ, we need to be the first to get math and then start it from scratch. It may very well be possible though since we will be building it at 20spt. However, as our production compared to research is insane, they only value we get from SoZ is that the units are better than what we can build. We are not sure yet if we can build swords. If we can, SoZ isn't worth real a lot imo.
If we do not want to go for Collosus, we need to focus on research so much, that we should first build roads without mines and then come back later for the mines. We should then max commerce and build curraghs to get many contacts. With many contacts it will be good trading and maybe no research is an option to think about. We could then probably get Iron Working and math at the same moment by trading. If we don't happen to have iron, we can build SoZ.
Of course, we are not on a random map. If it is possible to build the collosus is not a random event. Do they want us to succeed building the collosus ? Also we may not have Ivory without a reason, maybe they want us to build SoZ.
If we do choose to go for the SoZ option (first checking if we have iron) we have the choise to go for philosophy and trade math. this will help us further trough the tech three, it will ensure that we also have Iron working and map making to transport our units. However, it means the AI will have math before us. Of course, with us only needing 10 turns to build SoZ and most of the AI probably not having ivory, that ain't a disaster if they don't have it too long before us. The other option would be to go straight for math, but then we may not be able to get even writing, keeping us a long way from math making, and a lot less advanced on the tech tree in general. With the possible uselesness of SoZ, i have my doubts with this method.
With our production compared to commerce being so out of line, i also don't think we should research pottery whatever else we choose to do.