It's as easy as can be. You keep the cornerstone players and let ancillary role players get overpaid elsewhere.
why trade Irving at all? not seeing the point. even if the C's win the title, having Kyrie and Hayward added to the active roster next year makes this an even better team.
who starts/who finishes the games? keep players egos in check?
Cap issues. keep most or all of Smart, Rozier, Morris, Baynes or pay Kyrie 35 million a season?
I don't think it will be as easy as you think
See Evan Turner:
"Evan Turner signed a 4 year / $70,000,000 contract with the Portland Trail Blazers, including $70,000,000 guaranteed, and an annual average salary of $17,500,000. In 2017-18, Turner will earn a base salary of $17,131,148, while carrying a cap hit of $17,131,148 and a dead cap value of $53,606,557."