Not sure if it's mentioned yet, but keep this in mind, unless Horford takes a slight paycut, we can't keep everyone even after the assumption that you stash Yabusele and Zizic, and also dump Young, we'd still be about $500,000 off being able to keep everyone else if desired (Amir, Jerebko, Zeller, and Sullinger).
Again, not saying what we should do, but to keep that tidbit in mind.
Nevermind what I said above, I was using my wrong chart (this one included Durant and only keeping Jerebko, and we'd be ($579,600) off being able to do so). Anyways a moot point now.