the 2 bad sectors wouldn't worry me as much, but I'd monitor it over time. I have to admit I've never scanned a brand new HD for bad sectors. It was really the sometimes showing up in BIOS and sometimes not - I'd RMA the drive for that happening to me, personally. I'd hate to run it for a few months, get everything installed just right, then BAM.
But if you do really good backups, you'll be covered at least.