Welcome aboard, Pat! My name is Pat White and I hail from Belfast in the north of Ireland, although I live in Victoria, BC, in Canada these days. Actually, I've been in Canada a long time.
Anyway, I hope you enjoy the list. There are all sorts of folks here, and there's usually someone able to answer a question, or at least offer an opinion, on nearly any topic, but photography is preferred. You mentioned an interest in the 6x7. Now there's a camera! I've had mine for a couple of years, and it's a learning experience, even if you're very familiar with 35mm. More detail is revealed, along with your focusing errors, and everything else. It's actually possible to have the subject's eyebrow in focus, and the eye out of focus! The older models are not that expensive these days, and there's not the same tendency to buy lots of lenses that there is with 35mm, which may keep costs under control. The film and processing is another story, though. Like many things, there's no free lunch. With the big neg, you may find that a good flatbed scanner, like an Epson 3170, 3200, or 4870, does a fine job. Good luck with your stock shooting aspirations. Let us know how it goes. Pat White