Respectfully, I think it is a bad idea.
First, if you have windows that would allow someone standing outside to see that you have guns, you should not display them. And, even if they are situated so that no one can see them from outside, you may from time to time have people come over to the house for whatever reason, and they will be able to see that you have firearms. That could include the bug man, the meter-reader, the plumber, the electrician, the guy doing a house appraisal for your mortgage refinance, etc. My security rule is no visible guns, anywhere in the house. People like gardeners, landscapers, tree cutters, roofers, house painters, etc all will be able to see into your windows and see what you've got. and, all of those trades employ ex-cons who may be looking for their next job, or may talk about "that customer over on Rose avenue with the tan-colored house; he's got a whole nice display of guns in one room on the southwest side of the house..." I have a neighbor who had some roofing work done and 3 months later they had a daytime break in and the thieves went straight to the closet in the bedroom where the jewelry was stored. Turns out, it was a roofing company worker, ex-con, who used his work time to study the house layout, the grounds, the comings and goings of the homeowners, etc. Displaying firearms in a house is bad news waiting to happen. I have all of my video DVD's turned around backwards in the bookcases so that no one can see the titles. I don't need the painter or the carpenter seeing the DVD from Viking Tactical or the Michael Bane DVD's. No visible displays of firearms stuff in my home.