Usually take my time ~15 mins because I enjoy it and there's no rush. But I could give myself a great head or face shave in probably ~5 mins.
You're taking a risk of shocking the cat.I have to admit, my shaving regimen expanded as an empty nester too! I imagine it might expand when I retire. I also like the fact I can walk from the bathroom to my closet without needing a stitch on since it's only the wife and the cat.