The USDA recommends cooking steaks to a temperature of 145F with a 3 minute rest time. This recommendation of a higher temperature is out of a concern for safety and I've included this recommendation leaving it up to you to decide.
Cooking temperatures for desired doneness - take steaks out of oven 7 to 10 degrees before reaching the following temperatures:
For medium-rare (an internal temperature of 135 degrees F)
For medium (an internal temperature of 140 degrees F)
For medium-well (an internal temperature of 150 degrees F)
Remember that the steak's temperature will continue to rise after removing from the oven and will also rise when you sear it at the end.