You really don't need much for Granite. If you are going in late summer, a very basic "rock" rack (a few medium size passives with one or two small pieces and maybe a piece in the 2"-3" range) would be plenty. You might substitute a cam or 2 for a couple of the passives. Bring several medium length slings and a couple of longer ones. Add eight to ten carbiners including about four that you wouldn't mind leaving if you don't have rappel rings and don't want to trust what's there. Earlier in the summer, crampons and at least one ice ax could be useful. Anything more than this would really be overkill for the standard route. Most people don't use this much stuff.