You and I are probably fairly similar in build from the sound of it. We are the same height, and at 18 I was 210lbs, 36" around the middle. First off, I want to congratulate you on your willingness to change your habits. Keep in mind that more important than where you are now, is where you are headed; find satisfaction not with an end result but with the gradual (and I highlight gradual) progress you are making. Doing this will ensure your success.
I do want to point out one thing. If we are really similar, your goal of 150lbs is quite unrealistic, and even unhealthy. I know because I've been there. I dropped down to ~145-150 lbs at the lowest (with 6% bf), and looked like I was starving to death. My waist was around 28 inches, which made finding clothes a real pain too. I was sick constantly, and caught every cold worse than anyone I knew. I felt frail and miserable.
The take home point is this, 150 is way too low a goal. If all you want is a 32" waist, with some exercise you should have it by 170-175 lbs easy. I wouldn't recommend dropping below 165, instead focus on eating a good deal of clean food and gaining muscle.
I'm an endo myself; it can both be an asset and a pain. You will at some point try to increase cals to gain weight, it is really important that you do this slowly. I'm pounding back 4k atm with almost no fat gain, but at 2500 cals I gained 10lbs of mostly fat because I had been so calorically deprived prior.
One last tip, don't cut out saturated fat completely. You need it for hormonal reasons.