If you've never done this before, there is a good chance you will fail.
But- you never know. In the 20+ years that I've worked in commercial real estate, I've helped open up dozens of new restaurants, sandwich shops, pizza joints, etc. Some have customers from day one, despite their locations being not so good. Others are in the best possible location, but they can't get anybody to show up for some reason.
Anyhow, here is the advice I give every new restaurant person I work with: calculate all your costs for two years. That includes build out, total rent and CAM charges, utilities, insurance, maintenance of equipment, wages, food and paper costs. Since you're working there, assign yourself a salary, enough for you to live on, and calculate that in too. The total is the amount that you need to get started. You will NOT make any money the first year, and it is extremely unlikely that you will make any money the second year. If you break even, then you will be a success. If after two years you are not at least breaking even, then it's time to quit. But HEED THIS ADVICE- put two years of your expenses in the bank. If you don't have enough on hand for two years of expenses, then don't start this business. If you do start it without those savings in the bank, you'll not only fail but you'll be forced to go into debt and your failure will hurt you for years to come.