Instead of asking this question the thing to do is crunch a lot of numbers. Figure in square footage, NNN, insurance power, equipment, internet ect. All your expenses. Excpect that list to grow.
Then you will be able to get a good idea how many computers or consoles you will need to rent out and for how long. Visiting a lot of centers at a lot of diffrent times of day and week will help here.
Anyway, no replacement for footwork and paperwork.