A cordless drill will do the job but it's not fool proof. Clutches can get bumped and aren't that accurate to begin with. Torque also doesn't stay consistent as the battery drains.
It's a tradeoff in favor of ergonomics and operator efficiency over process reliability. You can split the difference by loosening and semi-tightening with a cordless drill, then torquing manually with a torque wrench.
Impact drivers are pretty consistent IME, but they'll apply too much torque for your application on the mid to high settings, and aren't as consistent on the low setting.