Awesome summary thanks. It's definitely for just these four holes so I'll opt to rent. But that's super helpful.

Awesome, thanks. Everyone seems to be agreeing that a hammer or SDS drill is the way to go. I'll drop into my local tool rental place and ask tomorrow what they've got for the job.

Okay awesome, I'll go in and ask in person then and see what they've got. Thanks the advice!

Is a hammer drill the same thing as an impact drill? My nearby tool rental place has impact & rotary drills, but nothing called a hammer drill specifically.