water temp has nothing to do with AC system, condenser is in front of radiator, as long as fan workes, or the car is moving, condenser will work no matter how high the temp in radiator is.
for lz, u got 2 problem, high water temp most likely will be a blown head gasket, it is easy to confirm, do a compression test. for ur AC problem, it could be anything, no one can tell until u got high pressure and low pressure reading.