Sabine, don't feel guilty about taking a nap. I take one on Saturdays and Sundays while the kids nap if I can. And surprisingly, since going Primal, even when I get next to no sleep at night, I still manage to make it through the day without dozing off or begging for a nap. It's interesting, to me anyway. And last night was a good sleep night, so no worries. Enjoy your nap.
Hooray for job interviews! Hopefully one of them goes somewhere great!