Sounds like you've thought this through. In that case, the most important thing to remember is to make sure the car is mechanically sound. Since you've said you are not a gearhead, it will be extremely important to take a mechanic with you to inspect the car before buying. If that is not feasible for you, then consider an online service that will send a local mechanic for you to do an independent inspection. They usually run $275-350 or so. Here is one link to check out if you like. http://www.cars-on-line.com/insp-1stpg.html
Also, remeber these cars are over 40 years old. Even if they are sound when you buy them, they will need periodic maintenence and repair much more frequently that a modern car, especially if you are using it as a driver.
Hope this was helpful.