You could make the same $ with a full 8000 arena and full prices. You could make 342k/match with a full 10000 (8500/1200/280/20) arena and full prices. I sincerely wonder if expanding that much, specially while in division IV, is the best strategy. You're stuck in division IV, where attendance is very low and profits are minimal, while you could have spent money on players and have promoted to higher divisions where you make much more money with tickets, merchandising and TV revenue making at least the same amount of money with your arena without having spent millions upgrading it for it to get empty or occupied by fans who paid nothing to attend the game.