You could probably get away with more like 30 hermits. Once your tank is well established and algae goes down you'll have to overfeed to support that. Sounds good overall though, just make sure that lemonpeel doesn't eat your CUC as they are reef safe with caution. I think you should throw in some nassarius to stir the sand bed, on the order of 20-25 of them ought to keep your sand bed clean.
Display tank - 24g nano w/ softies/montipora
I run electrical appliances underwater and enjoy injecting things with Kalk filled syringes.