May I suggest the JOBO E6 chmicals? I've used both JOBO and Photocolor "Three Bath" kits with excellent results.
While possibly not quite as flexible as the Kodak chemicals, they are considerably easier to mix and a lot less complicated to use. Shelf life is resonable - something like a couple of months witth the opened concentrate bottles and this can be increased with the use of JOBO's "Protectan" spray.

Try the JOBO web sites:
and the German site: