I'm relatively new to developing and printing, restricting myself to b&w to this point. However when I acquired through fleabay a job lot of developing/processing equipment it included amongst other things four colour processing kits and some 11 x 14 and 8 x 10 colour paper, all out of date and I'm wondering if I am wasting my time even opening the packets. How old is too old?? The chems have never been opened, some of the paper has been opened, I can't vouch for how they have been stored.

Here are the details:

Photo Paper
Kodak Supra III, date written on boxes 23/11/04 (assume purchase date)

Processing Chems
Agfa AP 94 (RA-4)Kit, date on kits 5/8/2005