Decided to go ahead and install the office door so that I could learn the ins and outs of the barn door hardware I bought. Used an old hollow core external door, it's not wide enough, but it's close, and if I botched it learning it doesn't cost me anything. It will be replaced with a proper door, but not until the flooring is done, which will be a while. Quality of the hardware was better than I expected. Made a few little mistakes, but nothing big. I'll hold off on getting the real door until I know what the exact height of the flooring will be. For now this at least allows me to keep the cat out. I'll go ahead and order a 2nd set of hardware so that I can do the bike room. I'll do the same and use an old door so that I can test it.