FOV at 120 is the most important thing. Be careful with raising the 3D Strength. If you use Geometry 3D, the default of 1.0 is quite close to what you experience in reality.
The higher you raise separation (3D-Strength), the smaller the world around you gets, this is how it works. Imagine it as your eyes becoming farther apart in reality, which would have the same effect.
VR is not about an over the top 3D effect, it’s about recreating realistic scale and 3D. The default value is pretty close to that. If you think you really have to change it, change it with great care.