Great thread necro right there! Wonder what happened to pp03? Seems he grabbed his toys and ran off!
Suicides, gz on the job interviews mate! you should be able to smash 3 days to 60 no problem. As far as instancing from 60-80, well I'm still in the process of levelling 4 DK's with my bro using his (same level) shammy to heal. Found 60-70 flew by.
I'd recommend going to Northrend at 68 though and doing the starting area's as I found gearing up with Northrend greens was much more beneficial than going straight into the first instances undergeared.