Just be aware that the first thing that will stop working with an unlocked bootloader will be Netflix HD. I don't have Prime so can't comment on that.
You will be limited to 720x480 resolution - 1750kbps.
4.4.2 Stock, not by choice
Stock, rooted >>>> replaced by AFTV
, you guessed: stock
4.2.2 Stock, rooted...can you say I am...STOCKED?