all done! replacing the unit itself took me 15 minutes tops
bleeding the brake system took about an hour for the rear passenger side (was doing alone... pump brakes.. wedge pipe between seat and pedal.. open bleeder.. close bleeder.. rinse and repeat
doing the other three wheels took about 15 minutes cause my roommate showed up and became the official brake pusher..
end result..
no more abs light and blean brake fluid... mmmm good!