Again, thank you all for your input - it is very much appreciated.
I reviewed the videos of the sliding jig, and while that has some merits, I don't think it will do the production rates I need.
After checking with suppliers and getting prices on Sawstop and Jet, as well as Bosch and I think one other, I went to the only non-DYI tool shop in my area. They, of course, have nothing to see on the showroom floor, but they told me the entry point on Sawstop is about $2K. Not a deal killer but kinda steep. I am leaning that way, but it will take about 30 days, and it still leaves a few questions.
In the meantime, the store sold me a Makita chop saw with the understanding I coould return it for a no-questions-asked refund if it didn't work out for us. I built a very temporary jig, but I am not happy with it for a couple of reasons.
I wanted the tip to go under something so there was no danger of it kicking up. So the end/tip is inserted straight along the side "fence" and the tip gets inserted under the two perpendicular 1x's. It works, but it isn't very fast. We will try to improve on it over the next couple of days to see if we can get moving with it. Any suggestions would be appreciated.