IM nuvo 20 reef stocking

[caveman28]

Hey guys, I'm going to be setting up an IM nuvo 20 tank soon as my first saltwater tank. I have almost all the supplies i need (just missing a few things that are otw), and i wanted to have a general idea of what and how many fish i can comfortably stock in my tank. It's going to be a tabk with various macroalgaes and soft corals like GSP, zoas, leathers, and a kenya tree.

so far the fish i've seen that could probably do well in my size tank are:
-a single clownfish/pair
-yasha goby/candy cane pistol shrimp
-firefish goby (nonnegotiable)
-yellowface pikeblenny
-possum wrasse
-geometric pygmy hawkfish
-barnacle blennies
-yellow clown goby
-green banded goby
-tailspot blenny

-dwarf blue leg hermit crab
-various snails
-blood red fire shrimp or skunk cleaner shrimp

sadly i cant stock my tank with all of these amazing fish/inverts :( But what would you guys recommend for a nice balanced tank? i'm open to other options too, I'd love to hear everyones suggestions!

 

[Mr. Mojo Rising]

Me personally I would go for the clowns, the yasha goby and the shrimp, and a yellow clown goby.

 

[caveman28]

Me personally I would go for the clowns, the yasha goby and the shrimp, and a yellow clown goby.

would i still have room for the firefish with that stocking? firefish are what originally got me interested in saltwater and i wont be doing a tank without one lol.
another question i have is what would be the real difference in behavior if i kept one clownfish vs a pair of clownfish?

 

[exnisstech]

Two clown fish can be cool to watch the behavior when they spawn but it can also be a problem in smaller tanks because they often become aggressive when spawning. I'm not a big fan of clowns unless their in a tank with nice nem. They just don't do much but hang out in the same place. Also if two males are added together you'll have to deal with the aggression that comes when they figure out who is going to transition to female.
I like a possum wrasse for pests and they are chill. My yellow banded would just hide in the rocks but ate well and hunted a lot. Mine is out a lot now but it's has the tank to itself after i moved the other few fish out. I haven't really kept any other fish on the list except I have pistol shrimp with a high fin goby but haven't seen them since i added them. The goby may very well be dead but I hear the shrimp. Same thing happened when I added a pair a few years ago.