you can also drop the lights once you have them in Position of your Cam using the hierarchy Editor, or change them to Point lights. it is a good helping tool , but still use Point lights, I usually change them by scaling and making there aspect visible , adding lights in the room I just duplicate these and move them
around , fast method with good results.
the other two things that you might want to consider are the Cam Light Bots that also can be good
helper tools for Interiors G-Drone
and Flying Camera Bot