Imoudu - Spelman
Szakmary - Agost (or Alsmeier, depending on Agost's reception)
Schölzel - Barfield
Schwerin is surely among the top 3 teams next season together with Stuttgart and Dresden and has a chance to win titles. They're qualified for CL group stage.
Szakmary - Agost as outside hitter duo doesn't seem strong in serve receive...
I would play with one of them and Alsmeier to stabilize the reception.