I'm a photographer based in the Midlands, and have just been bitten by the 5x4 film bug.
I shot 3 frames at photography college and talked my lecturers out of making me shoot any more as I wanted to be a press photographer.
17 years later (and a career in press photography) I've just bought a Toyo field camera and have started shooting my own projects between the paying jobs.
Not sure how much I can contribute as I'm still learning, but so far I haven't made any big mistakes yet, and thankfully, Tri-X is still as good as I remember it

Regards
Ed