Ilfochrome material logevity

I have a bunch of ilfochrome paper and chemistry (P30 kits) of unknown age but possibly 10+ yrs. Any chance of the stuff being any good? No idea of the storage conditions, but nothing too brutal. Room temperature at worst.

Also have Ilford Cibachrome A-II paper (16x20), Cibachrome II paper (16x20), and Cibachrome Deluxe Paper (Cf.1K) 8x10. Are these compatible with the P30 Ilfochrome kit?

I think Ilford did minor P30 formula adjustments to match a particular paper emulsion, but don't know the details.
I know the CF1K will work with the P30 kits just fine.
I've had good results with paper that has been frozen for 5 years after expirey, but never tried anything older.
I think the P30 kits shelf life was 3 years, I tried some that was older, and got crappy results.
DT