Yeah, it may even be too much, but any leftover will get used eventually for some sort of nano or pico tank. I may also add some more to my 10 gallon.
The BRS Reefsaver rock had excellent reviews, and in particular people praised it's porosity and ease of aquascaping. I don't want this to be just a big pile of rocks. I probably won't be adding any discosoma mushrooms for a month or two after it's cycled. I'm going to try to get some larger ones. I know a lot of people locally who have nice blue, green, purple and red ones that they curse for their rapid growth. No problem for me since that's all I'm using and they shouldn't sting each other.