OK, my well experience only includes homes with basements. The tank and switch are easy to get to when they are in the basement. How about this? Pull the cap off the well head. Hook up a garden hose to a spigot. Run the hose with your ear over the well. You should be able to hear the pressure switch click on and off. Stop the flow of water when the pump starts, and start timing.
You are looking for 60 seconds of run time after the pump clicks on, without the water running. This test will verify that your tank is good, the correct size, and not waterlogged.
Its all about the duty cycle for the pump. Short cycling the pump shortens the life of the pump.