New additions during upgrade

[topdogreefer]

I am upgrading my 150 gal 72x18x27(ithink) to a new custom tank by glass cages which I will be ordering this week. The new tank will be 84x28x24.

I am a tang freak I currently have a purple a yellow and a blue hippo. I was Givin a yellow tang which I had te rehome due to aggression from my other yellow tang. I really want more tangs in my new tank and I see the upgrade being the best opportunity.

I would ideally like to add a gem and a white tail bristletooth. Possibly a powder blue.
I'm concerned that the gem will be targeted by the purple and yellow. My wife says I should get a Achilles instead of the gem which to me would rule out the powder blue.
I'll be acquiring all new livestock from Dr. Reef.
What would you do?

 

[Reefing Madness]

 

[crazyfishmom]

I have two yellows and a gem in my tank. I think that if you add them at the same time and they are appropriately sized that they will be just fine. Make sure that you feed the tank really well before adding and float the bags for a bit in the tank so they see each other.