IK, first of all, you're a brave, brave, brave and motivated woman. I'm in awe.
Second, as everyone has said, you look good already yet I can completely get behind your motivation to look *great*. So completely cheering for you.
But (did you hear that coming?) I'm going to agree with Meredith and others, and suggest you check in with a nutritionist or doctor about this calorie-restriction plan. For someone your height and weight, that sounds very drastic --- enough to reset your body's metabolism pretty permanently to famine mode, and that is VERY BAD for future health, which is your main stated aim. Those are baseline calories you're talking about, do note!
I'm all of 4'10'' and was pretty sedentary when I restricted myself to 1000 calories a day. It worked, sort of, for a little while --- then I started putting on weight like never before. It was years before an actual trained nutritionist cottoned on to what was happening and why --- my diet, while VERY healthy in its components, had been too restrictive and my body was constantly suspecting I was on the edge of famine, so stocking up. I'd be super careful with that, because the way my body reacts to less or more exercise and lowered or extra calories these days is not something I'd want to wish for you. I had to watch not just my diet but my activity (as in, not even TOO much exercise) for years before my body yielded a little, and I still have to be watchful or my weight yo-yos like mad.
Another small suggestion: Get a different sports bra? This one doesn't look so much like it is supporting you as it is cutting into you (like bad shapewear)!