Wait, it was 10 hours per character from 85-90 with cooking? So 50 hours for a 5-box team? And 5x the gold I guess?

There are better ways if you want to get a single toon. There are several mob tagging areas, one in kunlai that'll get you a level an hour almost if you have a boxer friend (or your own 90 toons) to burn the mobs.

Then again.... 10 hours just cooking stuff and using macros, not having to deal with mobs or quests? Actually may be a great alternative.