If KD and Horford are totally off the table, then I am okay with trying to acquire other higher paid free agents; I am just not blown away by Anderson or Whiteside.
First, I would much rather go for Biyombo - he's younger, more explosive, has an incredible build, and solid work ethic. Whiteside is incredibly talented, but scares the crap out of me. Between the two, Biyombo seems like much more of an Ainge guy than Whiteside, which is comforting.
For the stretch-4, I am not sure what direction to go in. I suppose we could force Crowder over to the PF spot and go for a guy like Bazemore, but I understand that is questionable.
Giving the max to Whiteside, Barnes, or Anderson would leave me less than thrilled at first, but I would probably sell myself on the merits of these moves with a likely improved roster next year while keeping all of our 'assets.'