1st year
The first year of any business is what is going to define the rest, if you stay out of the red during that time, you are set as long as you don't relax.
My Dad said something to me that makes alot of sense, your business is either moving forward or backwards, there is no middle ground. How this translates is obvious, those 2 boxes you set up will take a little time to get noticed, and indeed may never be your main focul point, then again, I've seen people on public boxes playing games more then taking care of biz, so you might want to put that into consideration. The menu expansion is also a very good idea, I guess it's up to how your cook can handle it, and of course how much extra in equipment you can afford to facilitate.
June, you are just starting out, be happy the bills are being paid, it sounds like you have set up in the right place,. Yes give it time, it takes months if not years before the people that walk or drive by your place decide to finally frequent your establishment, and even then only for a change at times, so you gotta be patient. I do like the fact that you are taking steps in the forward direction, this shows you are going to make this work and aren't afraid to reinvest which is the most common downfall of any small business.