losing body fat % estimate

[1kerry]

Hi guys right now Im on a bulking phase more specific, on HDROL pct, and would like to star my cutting phase on january, currently im at 18-19% BF, and would like to be in the 12-14% range, supposing everything is on check (rest, diet, training) and with some stack like dpol, erase, alphamine, is it too aggressive thinking I will reach my goal in 15 weeks?

Been training for more than 3 years, no injuries , etc...

thanks