1. Capacity: 50.
2. Gross(month) 50k
3. Costs:
labor: 8*180*12=17280
rent: 5000
util: 1400
insur:1500
food:2500
supplies:2500(diapers!!!)
regular maintenance: 500
Repair/update: 500
Inspection/legal fees: 100
advertising: 500(fliers, etc)
total: 31780
So you will make some decent money even you are not running at full capacity.
You probably need 100k initial investment to remodel/update the place to make it into running condition. But in the first couple of years before you get established you probably lose money.