Yep, this is the rotation I see that makes the most sense but it's each of them on the bench every 6th game, not 5. And as you pointed out, it puts a pretty good hitter on the bench for pinch hitting duties. When Stowers and eventually Rutschman come up, it should make the offense better overall.
Replace Owings with Martin and you now have some speed on the bench as well as an adequate defender around the infield to include SS.