One of the hardest things for me to do is decide on stocking. I personally love shrimp, they are one of the reasons I like salt water over fresh, that does however mean that I have had to pass on the puffer and snowflake eel that I want because I don't want my shrimp to be dinner. That being said I see two ways you could go, you can keep the fish like the puffers and the eel and a couple larger fish or you can go with the more peaceful fish and keep the inverts. It is up to you, after all it is your tank. The fish should all be ok with coral to my knowledge but I only have a year of experience. The other hard part of salt IMO
is not over stocking. I wanted to add more fish to my 29 very badly but instead I decided to save up and start a larger tank. I kept my tank with 4 fish and used it as a way to gain knowledge in the hobby to apply to my upgrade. I personally would recommend running this tank in a good state and decide what size you would need in the future to be 100% satisfied. Then in a few years with more money you can get all the stock you want, for me I will need 4 tanks from 55 gallon up to 180 gallons as well as a shark lagoon to have all the stock I want. That won't even be an option in my current house, so I'm out at least 15 years. I will however be able to get a couple of fish I want when I make my current 29 reef into a fowlr
after my upgrade. Don't get discouraged this hobby takes time and $. One last question is what is your lighting, your nem looks a bit pale but it could just be adjusting. I don't know much about them as I haven't had any.