The cook time on the steak may very likely vary based on your oven’s broiler and how close you have the steak to the broiler. Just keep an eye on it and use a meat thermometer if you have one.
The cook time on the ris’oat’o may vary as well based on how gentle/heavy you are simmering it. The risotto will be done when you have added all your liquid, though, and it should have an “al dente” texture.