If it's just Deng or #3 it's not a tough choice. If it's lose two starters and get one back with the money coming out the same, it's tougher because they have no way to replace the other starter.
You can have all-stars at 1, 2 and 3 but if you have no 4 and 5 you are going to get out rebounded, and destroyed inside.
They are going to get destroyed anyway!
Just get the better players and let the rest of the stuff sort itself out as time goes on.
They have Nene at one of the positions as well.
Hell, draft Ryan Kelly in R2 and use him as your 4. At least he allows you to spread the floor some as well.