Okay, let me explain.
The base game is 95% finished.

BUT there's still a portion of the bonus content that's essentially only half-finished and is almost like its own game.

Now, normally I would ignore that and keep working on that part... The thing is, I won't be able to. Due to personal reasons, I won't be able to work 100% on the game for a few months (although I'm still not sure if that will happen).

So, I thought about polishing the base game, which is ALREADY ALMOST FINISHED, and delaying the bonus content in a future update/DLC so I could work comfortably and avoid delaying the game further... But honestly, I don't know if this is a good idea, so I decided to leave it up to you to choose what you'd prefer I do in this case.

Release the base game and release the bonus content as an update/DLC?

Or

Wait longer and have more content in the game at launch?

The decision is yours! :D