In a 30 gallon tank, I would aim for between 40-50 pounds of lr. I think you have about 15, you should add it all now that way you get the cycle out of the way. If not you could keep having ammonia spikes which would be extremely detrimental to the fish in the tank. Live rock is your tanks filtration, it is THE most important part of a new tank.
If it were me, I would start by getting all fish out of the tank. Give them to a friend, give them to a lfs, just get them out. Then add a lot more rock. Then wait for your cycle. In the meantime research what you really want to put into your tank. Then after the tank is cycled you can add a clean-up-crew consisting of different types of snails. You will find hermits are useless. After the cuc has been in for about a week or two, and all your parameters come out normal, then you could add your first fish. Clowns are always great additions because they are very hardy, they are basically damsels in a tuxedo. HTH