Hi heylow, I just want to say that I started my journey near your age at at a similar weight(210 for me) and I can tell you that there really is no reason for you to start out at 1,200 with your stats considered. I personally began at a range between 1,400-1,500 and lost weight steadily on that, but eventually I dropped down to 1,200 as I lost some weight and got used to calorie counting. 1,200 is definitely not going to do you any good if it causes you to binge from hunger- I'm sure you could lose at a higher amount... maybe 1,500 would be a safe place to start, and you can see how it works and adjust from there.
As for your other question, in theory you could eat nothing but potato chips and lose weight as long as you maintained a calorie deficit, but the problem with doing it that way(even a less extreme version of that "plan", a mostly junky diet with at least some variety) is that those foods won't fill you up...which leads to binging for many. A junk-laden diet also won't give you the nutrients you need which can affect your weight loss efforts in a variety of ways.. I know that at the very least, I personally wouldn't have the energy to maintain a proper exercise regimen if I wasn't keeping myself full and nourished with a variety of healthy, nutrient dense foods in my diet. With all things considered, healthy, clean eating is really the way to go.
