Hi Mick, thanks for your note.
When I mention zooming I'm probably talkiing about zooming in on an image once I've scanned it, looking around in the detail on a computer.
I've just today ordered a 300mm lens (Apo Ronar) which I am looking forward to a lot.
I think that 90, 135 and 300 should cover a lot of what I'd like to do on 4x5. This image is a good example of me being drawn to a view where there is lots going on and I've been pretty slow on the learning curve to pick a detail or two and bring them out as the subject. I often "zoom in" while looking at a scanned image and create crops that I like the look of. Its a different kettle of fish in the field but overall I'm happier with my compositions made this week than a month or two ago