I don't know - if you look at last year's Rondo trade, Dallas didn't give up two firsts. I would prefer one non-BKN first and the Minny 2nds. There is no guarantee we keep him at almost $30M / yr next year.
And no, I don't really think Horford is worth any more this year than Rondo was last. He is still very good, but he has declined slightly. It is not only the package we would have to put together, but whether or not we want to pay him $20M more per year than Sully.