Does your team have 8 people? Are you planning to expand the team in the future? I think that such games should have whole groups of developers
I am sure that they will still have time to recruit new people to the team. If the development is productive now, then more people do not need them. By the way, what plot will the game have? I have not found an exact description
On the topic of space, can come up with a lot of different ideas. I hope the game will be something like the world of Star Wars