Looking for opinions on 15g high fish selection

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I was hoping to get some opinions on the fish and inverts I was planning to add (over time) to my new 15g high tank. I'm on day 20 of cycling. I have 20 lbs of LR and 20 lbs of aragonite sand. I'm currently reading "The New Marine Aquarium" by Michael S. Paletta and I just happen to be on the Fish Selection chapter. In the book, he briefly talks about a "barebones" aquarium in the 15 to 20 gallon range. I was planning to add the following:

FISH
2 Percula Clown Fish
1 Royal Gramma (or 1 Yellowtail Damsel)
1 Neon Goby

INVERTS
1 pepperment shrimp
1 small hermit crab
1-2 snails

Your advice is appreciated.

 

[HoopsGuru]

Since it is high and not long, I would go with everything but the royal gramma. There just isn't a lot of territory available and once the clowns pick a spot to "settle down" they could potentially become aggressive towards the gramma and/or vice versa. The goby should be fine because it "perches" more than it swims.