Don't build too much in; let the joists and studs show; never be afraid to hammer a nail into a wall. Make do with what you have. You never want it to be so set that you can't rig it some other way if you feel like it. If something's less than ideal, shrug and get on with it. It's just a utility room, not a work of art in itself.
The point, of course, being that you shouldn't let Lightroom's details obscure your larger goal of practicing photography. I'll try to bear it mind in my upcoming posts about the details of working with Lightroom.