Wish I had this how-to when I did this a week ago!
I was able to use a 3/8" drive ratchet with only a 13mm socket on it to get to the top pump mount bolt by sliding it between the mount and the frame.
I didn't take any of the hose clamps off, but I did end up taking the upper hose (the one that's impossible to get to on the pump) off at the intake manifold and pulled the pump and hose out, then took it off, reattached it to the new one and fed it back up to the manifold.
Also, there is a bleeder bolt on top of the intercooler that you can loosen if you take off the passenger side headlight. I did that and it took me maybe that ten minutes to fill and get the bubbles out, and that was after draining the entire system (a week later, the level is still correct). I added a bit of RedLine Water Wetter to it too.
You have to have the car running for the pump to start too, putting the key in the run position will not work.
I was prewarned of most of these things by searching the forum, it's great to be here!
NCState, feel free to add any of this to the how-to if you'd like. I don't mean to steal your thunder!