Hi KristijanL. I think you are at least 50% undersized in diameter to get the force and sensitivity that you will need.
This is much discussed with pictures on topic “Vacuum Automixer Project”.
If this link works you will see directly pictures of Dutch John’s dual single action “Mickey Mouse Ears” system that he made up:
If not links search the topic under the magifing glass icon on the top tool bar for comment 22 out of 228.
Pictures of ChrisKY’s controller system build farther down on his topic.
Regards
Steve Unruh