To me, the best plan is to go for is:
Level 2 stadium $317K (I already have this
)
Level 1 Fanshop $30K (I already have this
)
Level 2 Fanshop $63K (I already have this
)
Level 3 stadium $859.5K
Level 1 Catering $60K
Level 2 Catering $82K
(This adds up to a total of $1.4m)
By this point, assuming you sell the tickets and get yourself a full house of 4000 for every home match, you will make a profit of 106K per home match (an average of about $37,000 per day = $1.2m per season)
With TV revenue and hopefully offloading some players, I reckon this will be easily achievable by the end of the next season (mid december).