Highly recommend the Osmo Action VLOG Set as a great starter pack for your Osmo Action. All components are built with good quality and haptics are accordingly.
The case easily fits your Osmo Action and a decent amount of accessories. The cage itself is easy to get the camera in and out of with the sliding backplate. Full access to all controls, screens and ability to open the USB C hatch. with a removed hatch, you can also fit the CYNOVA audio adapter while having two cold shoe adapters for adding the microphone and a light or other accessories. The tripod is a very versatile tool to use as a handle, tripod, selfie stick, etc....lot's of options to get creative!!