Your bodyfat is honestly still probably around 10%. Not to bum you out, but it looks like you lost muscle along with fat from your before to after photos. In fact, I would say it looks about even between muscle and fat loss... and this should NOT be your goal when cutting.
You need MORE PROTEIN. Seriously. Try eating 2 chicken breasts, two cans of tuna, 6 eggs, and 2 protein shakes in a day. That is probably around the protein intake that you need. You won't get fat from eating lean protein believe me.
Try eating your carbs in the morning (50g), at lunch (50g) both slow digesting complex carbs. Then your last (50g) can be fast digesting like fruits or WMS right after your workout.
Do your cardio in the morning, fasted. If it means waking up a half hour early, so be it.
If you crave a snack, try unsalted almonds or a scoop of natty pb. The fats should help curb your cravings for the carbs. Just make sure they are good fats. BTW, you need good fats. Especially if you are going to cut your carbs.
You probably should eat over 2000 calories a day. I know a lot of lean girls who eat more than you do at the moment.
Take a healthy dose of BCAA's before your cardio. NO CARBS.
Try HIIT cardio. I only do it 3 times a week for 20 minutes, but I am leaner and hold onto more muscle at the same time because of it. If you want, give yourself an extra day of SSCV like jogging or walking for 45 minutes, but make sure that your diet is slightly increased when you do this, as long bouts of cardio will make you catabolic.
Lastly, work out hard, and get out of there before an hour and 15 minutes is up. I can't get everything in in 45 minutes, but I know I can finish around the hour mark. Your body is not really benefiting from the workout after this period of time, in fact many people go catabolic after this much working out. Things like Caffeine and stimulants trick us into thinking we can keep going, just because we have the CNS energy, but our muscles are already done.
Solid compound movements. Stick with the basics. You aren't really ready for a bodypart twice a week, your body just simply isn't yet... mine isn't. I tried it and I didn't grow, and I just got perpetually weaker as time went on. There really is such a thing as TOO Much.
If you think you are ready, try out DC training and slow your cut down. It has done marvels for my physique.
One last thing to consider... You aren't fat at all. You are in pretty good shape my friend. If I were you, I would stop this cutting nonsense and get to lean bulking. Give yourself a year or two before you cut back... make some progress with the muscles and your size. Honestly, if you get the diet down and start building muscle, you will lose that bodyfat you want gone... and you won't have to worry about losing muscle in the process. Why cut at 180? So you can be 6' tall and 160 lbs? You aren't going to look ripped, you'll just look skinny. Get to 200 and then peel it back and see if you aren't a ton more satisfied with the results.
Remember with your physique, this is a marathon, not a sprint.