Thank you all for the responses.
I have a copy stand on order that should be arriving today and an Essential Film Holder that will be coming along some day soon. Though I don't have a Kaiser Slimlite Plano panel, I have one that I think will work for now. I decided to start with a lens adapter to use my Nikon macro lens on my Canon 5D II body, rather than spring for a Canon mount macro lens. My plan is to gain some experience with digital scanning, then replace/upgrade pieces where I see a weakness. As of now, I'm thinking that I'll be scanning only MF (6x4.5 to 6x9) with this setup. I'll leave the 35mm to my dedicated film scanner and LF on the Epson flatbed. This may all change, of course, as I gain experience with digital scanning, but that's the current plan.