So I am playing in 1.30 right now and I wanna do Empire of Mann. I know the usual strategy is to move to the new world and make a empire there but I found a strategy where you can conquer all of Britain in 50 years max wich I am using. I am currently trying to make Portugal my vassal by attacking it until it is small enough so it can colonize for me. But my question is what should my plan be after?