Thanks for the suggestions.
The Kaidan setup I mentioned is being provided by the company I'll be working with. They're happy with the quality it produced for their VR tours, plus all I'll need to do is send them the raw files.
However, I'll need to purchase my own camera for still images. There are some excellent deals on the Kodak P880 and Nikon 8400 right now. I'll probably go with one of these and try taking some testphotos in my own home. If the 24mm isn't wide enough, I'll return it and get a DSLR with a wider lens.