Welcome to the world of the graflex slr! I have a D 4x5 and an RB auto 3x4. These are great cameras, a lot of fun to work with and work on, I've repaired various things on mine, reset the shutter tension etc, you'll find they are very simple and friendly to work on yourself. There are some great lenses out there to play with, and often quite reasonable as they don't have shutters. A graflex gallery would be great, I'd put some stuff up there. I use grafmatics with the 4x5, and some regular holders, and I have a roll film back for the 3x4. I've also used a bag mag in the past, but not recently. Make sure the bag is clean, and the inside of the camera too, they can get pretty dusty. If you haven't seen it already, check out Graphic Graflex Photography by Morgan and Morgan. You may be able to find it at your library. A good resource and insight into how things were done in the 40's.