I'm doing the same thing right now.
I hooked a strap to the driver side of the hood from a rafter. Then, I packed old towles around the hood where it tucks down inside in front of the radiator. Then, I hooked the spring hook into the retaining strap on the hood. I removed the two bolts on the driver side (same side as the strap from the rafters), and made sure the hood did not move with the bolts removed. Then, I moved to the passenger side, supported the hood with my right hand and shoulder, and removed the two bolts with my left hand.
It worked OK, but I will try to get a 2nd set of hands to re-install the hood.
As far as removing the water pump with the radiator in place. Yes.... I was able to. My new pump is supposed to arrive in two days, so am anxious to get the car on the road again.