Yes. But it's been a bit controversial as some fans felt the ending was rushed or didn't meet their expectations. However, it's still a completed series.
I don't have the specific number off the top of my head. But you can try searching on popular manga platforms or asking manga enthusiasts in online communities. They might be able to give you a more precise count.
In certain comic versions, Namor is indeed identified as Latino. This aspect might vary depending on the specific storyline and creative direction of the comic.
The CSM manga has ended. It had a definite ending that either satisfied or left some wanting more. But regardless, the series has completed its journey in the manga world.