I agree you can't win Cup and the Championship with 7 players, I was just saying that with 7 players you are virtual certainty to win your league if you play things right. And you could still compete in the cup if you are lucky. You simply win 1 of your league games each week and win the cup. Most weeks the cup will be an easy team anyway. It's only the later stages of the cup that are harder to win, and if you have enough league games racked up you could concentrate on the cup games and still make playoffs in the league. Hard to do, but if you set your sights on simply the Cup or the Championship and not both, then I think it is easy to do with 7 players.