This looks very interesting. Thanks Smash. It should be challenging, much more so if you try an OCC. Old n Slow, regardless of OCC, I would not build the Lighthouse right away since you can reach North pole easily. I would only build it if I cannot find any land close to the North pole. As for the choice between Colossus and Marco, definitely Colossus, then Marco. I would build Colossus first for 2 reasons. One, the AI is far more likely to attempt them in that order and thus I am more likely to get both. Two, it matters more to get Colossus earlier than to get Marco. Look at it this way: the techs you trade come to you at no research cost but at significant cost to your later research. The later you trade the more techs you have been able to research cheap. There is no point in getting Marco early if you are just going to wait to trade. My advice to anyone planning to try an OCC for this one (this may very well include me) is to go for King Richard's as soon as possible.