The key (for me) to losing weight is consistency. I'm a little shorter than you, about two inches, and I was a little fatter than you are, I started losing weight when I hit 170. (Yikes!)
If I have a "cheat day", I'm screwed for the week. The calories in the food are bad enough, but the salt retention and (not to be gross) but the waiting time before I poop out all the extra food really gets me down. I can have six really good days in a week, but if I overeat before my weigh-in day, it makes me feel like I'm not making any progress.
I don't do cheat days anymore. I don't even do cheat meals. I do treats like once a week, sometimes less. I've found that I can't have "just tastes" of a lot of the foods I gorge on, so while I'm actively trying to lose weight, I won't eat 'em at all.
I've also found that comparing the calorie content to my goal keeps me motivated...like, I LOVE Ramen noodles. They're total crap, but I could eat them for every meal. There's also 400 calories in them, which is 1/3 of my calories for the day. I think about it like this "Do I want to only have 800 calories left of my day once I eat this, or am I OK with being chubby?". I prefer to eat
more food during the day, which means I prefer to stick to lower-cal stuff. And I'm really not cool with being chubby. So that usually keeps me pretty on track.
Good luck, and your goal is really ambitious, but I think you can! Maybe try keeping a food journal of what you eat and how your mood is, so you can better anticipate when you're going to want to eat excessively.