I shoot 4x5 color landscapes, and while I have dabbled in digital printing, so far I have shot only on conventional film. Alas, I sense that the day is not that far off when LF film and processing (and possibly even scanning services) will no longer be available. For B&W shooters, I suppose it is theoretically possible to prepare one's own emulsions and coat one's own plates (after all, photographers did just that for a long time) but that's really not a viable option for color work. The bottom line is that like it or not, I suspect at some point I will be forced to enter the 21st century and start shooting digitally.
Having been living in a cave for a while, I know nothing about what options are available. I'd rather not give up using a view camera, and ideally I'd like to get a back or some other system that can be used with my existing camera and lenses (I own one of the last Vermont-made Zone VI cameras, and Schneider 210mm and Nikkor 120mm lenses). Affordability is also an issue.
Can anybody suggest a resource for learning about what, if any, products are out there that might fit my needs? Or is what I'm hoping for just impossible?