Hi!
Firstly, no, there is no limit on team sizes, but large teams are a risk... I recommend that teams not be larger than 3-4 people, unless everyone knows each other well.
Also, I've removed your other posts because you made so many so quickly. Please try to not make so many posts in here, people might see it as spam. If you'd like to talk more, we have a Discord! The link is on the jam page.
But anyway, to answer one of your other questions, there is currently no path to people joining the management team. But being active in the community and growing in a way which enables you to help newcomers is a good way if that's your goal eventually.
Thanks!