Ignoring our phrase "Eight is Enough," the 1977-1982 American TV show. In fact, I and my friends always use the singular, because the number is a count. We would use plural if there were a noun, making the number an modifier: "Eight sons are enough."
The police is an organisation that maintains public order. The police are arresting my brother. 8 is a counting number, it is singular. 8 things are plural.... So, the team is 1st in the league. But the team are boarding the bus.
I find it's best to take the risk on a more naturalistic translation. Chances are someone has come along before you and suggested it if wasn't already accepted, and in the rare case no one has, you get to submit it yourself and help improve the system :)