"Well, it's always possible I'll want something else enchanted, but in that case I expect to get someone else to perform the spell in its entirety. The reason I want to do a day's worth of enchanting at all is because there's a side effect called aura that comes of doing enough of it. The day is a guess; it took the original enchantress Bell a few years of less continuous enchanting to achieve hers. And this is a full day - twenty-four hours. None of us sleep when we don't want to. I don't sleep at all. At any rate. Do you have schedule constraints I should be aware of?"