The decision to ride the Ferris wheel was unanimous. All of us could ride it together.

How could the sentences correctly be combined with a conjunction?

The decision to ride the Ferris wheel was unanimous, all of us could ride it together.

The decision to ride the Ferris wheel was unanimous, however, all of us could ride it together.

The decision to ride the Ferris wheel was unanimous since all of us could ride it together.

The decision to ride the Ferris wheel was unanimous, so all of us could ride it together.