Before you invest a lot of time and funds, check EVERYTHING out.All over head expenses, traffic in your location, type of food people eat, and everything else.Make sure the city will issue a permit to open a restaurant and what they will require .Have enough money to see you through until you start making a profit. Good luck and best wishes.
Saw the article below on getting grants for yoru business. You may also want to check the Economic Development Commission in your city or area to find out if they have low-interest loans or grants available.