You cant spot target fat loss.
Your calories are extremely too low for your height/size. Women cut on that amount.
You need to find what your maintenance is and reduce calories by 10-15%, that will result in the least amount of LBM lost during a cut.
Why are you cutting at 170lbs? Why not continue your bulk to 175-180 and then cut with more LBM on you.
No way you bulked on 2500 calories, your math is wrong while counting cals.