For heavy duty torque, I'll use some IR 3/4" or 1" drive titanium series guns. Usually connected to a 1" hose. But we're talking some pretty big / serious jobs. If I need to get away from the shop air system to do some work, and it is a serious job, the shop truck has a mobile compressor. Lately, I've been using the Milwaukee 28v impact and it keeps up with the job. With a pair or more of batteries, I can run that gun all day. It has a rating of 325 ft lbs. No bad for a cordless machine.
For your application at your daughters' house, that corded impact sounds perfect. I think we used to have one of those around the shop but not for some time. I guess with an unlimited air supply, we'll grab an air tool almost every time.
