These are pretty much all--including the SR apex crank--top shelf parts.

The gearing is half step plus granny which was often used on touring bikes BITD and it's a good way to eke out more usable gears when only running 5 or 6 on the back.

The bike just needs to be completely overhauled and the consumables replaced. I would definitely get rid of the brake pads and replace them with kool stops. Also it looks like the pedals are missing dust caps. You may prefer a platform type pedal rather than a quill in any case on a touring bike; MKS makes a good one.