I guess I should have said that I had printed Cibachrome before and do color work. All the chemistry is still sealed up. I'll just try it.
I'm thinking that if I don't get good results, I'll try using a standard PQ paper developer instead of the first developer. I think that chemical is the most likely to have not survived time. Similarly the fixer might be replaceable with standard rapid fixer.
Probably a good idea to cut up a sheet into several test strips. I have a paper cutter which is a rotary thing that can't cut one's fingers so that's good. I've used it in the dark and I put down masking tape on it as a guide for me to position the paper by feel in total darkness.