I don’t understand why so many think TKR should play the 4. He's nowhere near a stretch 4 and wants to play in the low post. Since the other 3 bigs play exclusively in the low post, it appears counterproductive to have TKR at the 4.
I think TKR at the 5 and CH at the 4 is by far our best option. To me, the only way that changes is if one of CF, RB, or WB starts hitting 3s or midrange jumpers at a high clip.
Although, TKR guarding 7 footers isn’t ideal either, so I can see some matchups where at least defensively he needs to guard the 4 while one of the other bigs guards the 5 (enough rambling).