How often are our games? I have bye this week then after next league game back to back away games and was going to build stadium more but have a feeling there will be a cup game in the middle somewhere, does that sound right?

Also, when said scheduling occurs, the team with the bigger stadium is chosen as host, and the gate earnings are split 50/50. Subsequently... you may be able to get away with construction before scheduling (assuming you're not hosting the game before scheduling already). However, I'd wait until there's fewer teams left and they all have sizeable stadiums, as there's nothing worse as knocking down all your stands and being drawn with a 1000 seat bot team and having to play there.