I'm back from the dead...
The upgrade is definitely worth doing, especially on the V6 version of these cars (they're heavier), this is an upgrade across all CG chassis versions. If memory serves, it's been awhile, you will have zero problems using your stock rotor equipment and pads. The...
You would need one of these tools to correctly tighten the crank pulley bolt back anyway. As far removal, have heat on hand( a lot of it) an impact wrench with 19mm (IIRC) and a LOT of patience. A cheater bar wouldn't hurt either.
They could be worn past the point of just re-greasing them (Mine were). They may not be though.
Personally, I'd just replace them, but that may not be an option for you. Grease them, ride a few thousand then check them again for uneven wear.
This
Also, those shops would do anything to take advantage of someone. Doing this job would take no more than an hour and a little know how. the guide pins do this regularly replace them and grease them well when you install the new ones.