The power steering leak could be an easy fix or it could cost several hundred dollars to repair. Some shops will give a car a quick look for free, and it sounds like this leak should be easy to identify.
Don't bother with the A/C. It's a luxury you probably don't want to pay for.
Have all the belts, hoses, and cooling system checked. Also brakes, and tires. Have you ever had the timing belt replaced?
This car can not be used to pull a 5X8 trailer.