Nice! Yep female plants produce the white hairs. It is just showing its sex that's all. Nice LST. When the side branches grow out it will be easy for you to tie them down now and the longest side stem you should be able to tie it down in the opposite direction of the main stem. Just make sure you don't put a strong fan on the plant because it can seriously strengthen your stems to a point where it becomes unbendable and makes LST difficult. A gentle breeze will do the trick.