Based solely on the amount of verbiage for the "cons" versus the one "pro", I'd say stick to your guns. That's what I'd do if I were in your shoes.

However, if you can set things up so you do these updates on your own time (they'd still be getting the updates done in a relatively timely fashion if you rolled out of bed around noon and did the work), and can keep yourself from checking work e-mail, it might be worth the extra week's pay.

In the end, though, I'd say you have to go with your first impulse.