In my first levels I spend 10-15 T to finish faster my stadium but I regret this. It's like Step says, step by step.
If supporters restriction removed then T buyers & farmers will have bigger advantage. I am one of them but I don't want this.
If you take it step by step, you will not have it on time, in higher levels ?As for me, stadium upgrade to the maximum it's a "must" in order to survive financially in higher levels.