You will need renters insurance. Most renters will not let you sign the lease without a policy in hand. 200/ month per person for groceries will not buy living necessities, such as trash bags and other houshold items. I would hope you'll invest in air fresheners too, or else the house will smell like a sweaty gym sock pretty quickly. Laundry detergent is pretty darn expensive.
Rent: 800
Renters insurance: 160/year
Utilities: 120
Groceries, soap, household items: 475
Car Payment: 500
Car insurance: 315 (for 3 cars)
School loan: 100
Furniture for 1 bed apt.: 4,000 all at once
Cable, internet: Free provided by job
Cell phone: 160 (for 2 lines)
Total: $2370/month