Prestond,
I have had excellent results with that kit, and the mixed solutions seem to last a very long time. I even tried a bottle of 14 month old dev and blix, just for the heck of it, and compared it to a test roll taken to Costco. Both rolls (Gold 200) came out well, except for slightly less density with the old chems. I wouldn't recomment it though. If you control temperature well (I have a home made thermostatically controlled bath) you will be pleased with the results. One tip, use distilled water for the dev, blix and stabilizer, and add a little Photoflo the the stabilizer or you will have spots. Good luck!
Best regards,
Chris