No bother Nolan, don't sweat it.
The rotor has some wear no doubt but don't look super terrible. At the very least you need some pads to stop the grinding. Before you install them though, you need to do a few things.
1. check the straightness of the rotor - warped = replace
2. mic the rotor for thickness - too thin - replace
3. deglaze/clean the rotor so the new pads bed in well
Might as well clean up the caliper real well since you have it off. Slides and pistons at the very least and check them seals.