I mean a handheld is not a bad thing, but it makes it a HELL of a lot harder to take them off.
Also, with the drill, make sure that the ring that goes around the tip is set to a number that will let it give if there is too much pressure. That is how you strip a screw, believe me. I just forget what it is called. It goes from 1-20(usually) and has something to do with how much torque it take for the drive to stop drilling. If you have ever used a power drill before, you know what I am talking about.