The OP's original trade idea wouldn't go through for either Sacto or Indy. I would do anything I could to bring in George and Cousins but that's a lot of fire power to send out both ways. However, it makes us 1 or 2 in the East without question.
To Sac for Cousins: Nets 2017, IT, Amir, Memphis first
To Indy for George: Nets 2018, Clippers first, Rozier, Crowder, Jerebko
Smart/Jackson
Bradley/Green/Young
George/Brown
Horford/KO
Cousins/Zeller/Mickey
That's a starting five that any team is going to have a very difficult time beating. Bench needs a bit of work.