It won't work this way, because injuries always happen, but a 6 man rotation of Martinez, Mikolas, Wacha, Weaver, Flaherty and Reyes is insane. That's an entirely under 30 rotation all with Ace of the rotation ceilings. The Cardinals, picking at the end of the 1st round year after year, have the best combination of Major League and Minor league pitching talent in the majors, kudos to Mozeliak and the development staff.
They could do some hybrid 6 man rotation thing to limit innings of those last 3 so they'd all be full boar for the playoff bullpen, and still have Martinez, Mikolas and Wacha pitch every 5 days.