For a sync cord, go to
www.ParamountCords.com. The tip that you want is there #13 bipost. The other can be their Sunpak but be careful with Sunpak 383's. I've filed the end of the Paramount Sunpak tip to safely slip in and out of my 383. I think their dedicated Sunpak tip is meant for things like the Sunpak 544 which actually a little different from the one used with the 383.
For a flash, I made a simple bracket that replaces the flash gun bracket over the range finder. It's not much more than a piece of 1" wide metal folded over into an "L" shape with an accessory shoe on top. I did this since I didn't want to drill a hole into the top of my Graphic. (Mine is pretty cherry.)
For daylight development, I use an HP Combi tank. It can develop 6 sheets at a time. If you use this one, go with developers and dilutions with longer development times, it helps even out development. Shorter development times work better when 4 sheets are developed at a time but requires a bit of practice. Tray or rack development would be easier to get good results but with some patience the Combi tank can do the job.
For a changing bag, I use Calumet's Changing room.
http://www.calumetphoto.com/item/RM1000/ It costs a fraction of the Harrison tents and seems to work for me so far. For half the price, you can get a generic changing bag, but if you go this way, get the biggest one you can. I used one with a small box inside of it to make a tent until I got the Changing Room.
For a dark cloth, I use my fleece jacket with the bottom portion over the camera and the collar over the back of my head. For a loupe, I use the Toyo, it's not expensive and it works well.
For film, I like Tri-X 320, HP4+ and Provia 100F. I'm also trying Portra 400NC color negative but haven't got any of it developed yet. I use the 320/400 speed film when I might go hand held as better results occur when the lens is stopped down to f8 or further since today's flash units have trouble matching the power of the old bulbs.
Of course, it goes on and on. I scan with an older Canon 2400 but the Epson 4990 or 700/750 series are tempting these days.
Then there's lenses but you can go along way with the 127/135/150/162 that is if it's in good shape.
And of course, you'll need a good meter. I'd love a Sekonic 758 that can do it all, but my old Gossen Luna Pro F does enough. A Gossen Digi-Flash might be a compact alternative that does incident, reflective and flash metering.
Have fun with your Graphic.
