I thought about that too. But the BMW manual says to remove at the water pump housing. Don't know why, so I did it that way.I just removed the hose from the radiator instead of the hose from the pump.
Got the radiator off, might do some cleaning on that. The coil removal tool will be here Monday. I should probably go ahead and order spark plugs, and maybe coils.
Don't forget to read the post. When refilling, leave the valve assembly in the radiator inlet until you have done the bleed screw at the water pump and hose. You will need the leftover pressure to make the bleed work.