I used the drill!! My dad retired last week (!) and my parents are spending the next three months in Colorado (!) so my dad can improve his Telemark skiing skills (!) which means I now have to hang my own stuff on the walls.
I'm not particularly concerned about all the extra holes I drilled while figuring out where to put the left bracket. However, I think the project would be more of an aesthetic success if the screws in the right bracket didn't each stick out about half an inch.