Update:
Here is a picture of my tank on Saturday a few hours after adding an ocellaris clownfish.
It's still really good to me! There's two snails that aren't moving, but aren't dead. Parameters are all in check, pH 8.2, ammonia/nitrites 0, nitrates 10. I'm not quite sure what to make of it. I also had another buildup of protein scum on the surface again and used a paper towel to remove most of it. Hoping my skimmer will do the rest, but definitely hard to find the sweet spot.
Going to try and take a picture every Saturday just to see the progress.