You are doing this again. Focus! Don't go alpha if you are planning to attack at construction. What do you do with the ability to look into AI techs? Not much.Research: Wheel -> Pottery .> Writing -> Alphabet, cause Maths -> Construction will take longer and Alpha let's us look into our opponents techs.
edit: just noticed this is monarch again, I was expecting at least emperor. You could also just go 2-city axes if you want to play optimally. In this case alpha makes sense.