Just be careful with the hair and bubble algae as they can be invasive if left unchecked. A little like you have on your rocks currently doesnt look too bad, but when it is overgrowing your corals it can be a pain. Several critters eat it and can help you keep it in check. Once done cycling, adding some clean up crew, including turbo snails and emerald crabs can help. You will have to make up your own mind on hermits.

Some people are pro-hermit and some not. If you have hermits and snails, it is not uncommon to see a hermit kill your snail to take its shell. It sucks though when they decide they dont like it and go back to their old shell. We only have hermits in the FOWLR as I wanted some sort of clean up crew in there, although surprisingly enough I do have a couple of big turbo snails that have learned to survive and adapt to the predators. The triggers, puffer, and wrasse will slowly catch and kill both the hermits and the snails. Circle of life. I do have a very large red leg hermit that no one messes with... sometimes it pays to be the biggest kid on the block.