My piece of advice:
Don't rush into implants, you are young and you will likely have good
development, and even if you happen to want implants afterwards it is
recommended to wait at least 4 years. I know this sound way too long but
if you have implants now, you aren't able to predict how much more development
will happen and therefore you might even find them too big. I don't know about
your height or frame, but remeber to keep proportion between hips and breasts,
particulary if you are tall.
As for the hair reduction: oestradiol has little affect, and anti-androgens are way
more important.
Hope i helped