I wouldn't worry about the lip either - if you are really concerned I'd just take them into a shop to have them turned for about $10. Then again brand new rotors aren't much more than that for these cars.

__________________
TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth