I have an old Makita with a boat load of torque....it works great. You shouldn't have any problem finding a corded 1/2" drill and virtually all home improvement places. FWIW, I have used a couple of different types of mixers, and the one I like the best has a 1/2" hex shaft, with 4 rods making a mixing basket at the end. It works way better than the flat "drywall" mixer. Maybe others will share their experiences as well....
when it comes to breakfast, the chicken is dedicated, the pig is committed.