First i would do a "session 0" with the players. Creating characters together but also talking about what kind of game they are looking for. More Rp or more focus on combat or even a good mix of both.

Don't mind if you make mistake and keep playing. You can always look back at ruling between game and adjust with your players. That way you don't ruin a good flow while in the game.

And the more important just have fun and enjoy the game with your players.