I'm probably too late on this one now
How did it go? Any decision yet?
I was going to add that 6-12 sounds like it would work, if you had already had dinner at home, you could have a shorter meal break and be finished what you need to do quicker..? Not sure how long your break time is, but I know that sometimes I would much prefer a half hour break instead of an hour, if it means getting home half hour earlier! And if you're eating chocolate all night, surely you won't need a *meal* break haha.. (still have a rest of course )
Good luck mate..