Empty tanks and I want tangs. What should I get?

[Hybridfish7]

Just moved a bunch of my fish around and cleared some space. I now have an empty 20 tall, a 20 long, and a 10. All I know is I definitely want tangs. The 3 on the table for me are neolamp.brevis, neolamp.caudopunctatus, daffodils, and julie.marlieri. I am not sure where any of those should go but I know I'm definitely getting the julies and more than likely the daffodils too. Not sure where the shellies should go if I do get them, should the brevis go in the 10 and then let the julies share a tank with the caudopunctatus? I've always heard julies make good shelldweller tank mates.
Open to suggestions for any other species but the main question is where to put things.

 

[DJRansome]

Agree with brevis in the 10. Daffodils are best as a species tank in a 29G but the 20L has the same length and might work.

I don't think I would do julidochromis in a 20 tall.

I would want a 36" tank for both shellies and julidochromis.

 

[Hybridfish7]

Yea I figured daffodils would be best if left on their own, and same with the julies, but more for aesthetics on their part

 

[fishguy1978]

Altolamprologus Compressiceps Sumbu dwarf would be an option. I really want to try them in one of my Tang tanks but they are already established colonies and adding the Sumbu would be promlematic.

 

[Hybridfish7]

I've considered sumbus, I love them and all but they're a little too far out of my price range for shellies lol