You're welcome, Matt. Thank you for purchasing these. I promise you'll not regret it. I'll have a look at the film holders and post photos of everything today. I also have a couple of 3x4 film processing hangers you can have with the camera and lens.
I've seen 3x4 film very recently but I can't remember where. I'll look for it. AFAIK, Ilford does still accept special group orders but that's only once per several months. If need be you can always cut 4x5 to fit but it's easier just to stock up when it's available.