Personally I'd AB to take out piles of CS until the civ thing leveled out more.
I mean, in terms of effectiveness... considering most of the countries they hit had almost no defense and were pure CS... the correct moves were, in order...
almost landkill > landkill >> AB >>>> BR >>>>>>>> GS
Too late, though.
These 1 civ GS at a runs are impressive. Bonus points for committing.
Living vicariously, I see? Lol