Maybe change the belts.because they are rubber and they have been still for so long.
Look for cracks,rips/tears general signs of wear.If they are not nearing 80K done on them,if they were not exposed to rain and the elements id say the belts will be k.Look at them give them a wiggle and see if they crack or not.
Dont worry about the water pump straight away.it might still be allright.But if it leaks you know it's time to change it.
Any1 feel free to proove me wrong.
You shouldnt have left the car,and not turned it over at least once a month for a warm up.
Mine was off the road for 1.5yrs.But turned over once or twice a month.the same belts,bar the timing belt,were left on and they had been going strong up untill last week.
So i did the oil and filter,brake fluid,timing belt,diff and gearbox oil,new radiator water.Water pump(tho it did need changing) urs may not.
PS:start the car up on a flat surface seen as tho it has sat for so long the oil will most surely be at one end of the motor.