I'd have to check but I suspect you may not get FD bars until 400 feet either. That's just my guess from operating t'other large Boeing.
BBK
For a go-around, as long as the airspeed is above 80 knots and the flaps are not up pressing TOGA will give you TOGA flight director indications, even if the FD switch(es) are for some reason off(although the system has to be armed, which it always is). Except of course while inhibited on the ground after a landing.