Re: bathroom fixture height
in CA, there are requirements that one fixture be energy efficient (flscnt?)and the other(s) can be anything and almost anywhere. For facial detailing, like make-up or shaving, many prefer double, low, side lights. either side of the mirror, even as low as 6', but i liked owners to initial that they wanted it that low. otherwise bar lights dead on top of flat wall mirror.
"Salons" use very warm flourescents to make skin look good. single source, cool lights often create shadows and highlight skin irregularities, and are disliked by many homeowners.
ask wife, girlfriend, wife of friend, any woman who applies makeup can tell you what is best.
paul