To me, Collins definitely starts. We don't want a lot of banging around on Wembanyama. It's not the huge smacks and aggressive Draymond , it's the constant pounding that will be the problem.
Collins is physical and gritty, despite looking like he's the villain in an 80s teen ski movie. He hits threes, hits jumpers from the FT line, can set picks and is getting better as a facilitator.
Johnson, Vassell start, giving two good three point shooters around Wembanyama. At this point, you start Jones. So three shooters from deep, pretty good defense, plus Wembanyama can pull from deep leaving Collins as a rebounder down low. It's a great set-up.
Sochan comes off the bench, the way he did for Baylor. I feel like Sochan is far more valuable coming off the bench than Keldon would be; so you're maximizing both. Long term solution? Perhaps not. But it'll work well for now.