Assuming that you still care about an answer here (you've not replied other than to complain about the camera in a separate thread), or that someone who really wants to know wanders into this thread, here's my recommendation, which will contain some of what's already been stated.
If this is your vocation, you need to be prepared to shoot under all sorts of strange lighting conditions. When dealing with an agent you will find that you can either dictate the best time for taking the images (a site and app called The Photographer's Ephemeris is a must for you as it will show you exactly where the light is with respect to a location at any specific time of day), or you will work on their time. In the latter case, and really in any case, you need to be able to adapt to any poor lighting conditions you'll encounter. So get comfortable with artificial lighting - flashes, soft-boxes and/or reflectors (if you're willing to accept money for this you should be comfortable with it already!!). Learn to take and process realistic HDR photographs. This is going to help you both indoors and out. And above all else, learn how to properly post-process in Photoshop. You're a professional now, right? You're taking money for work you're being asked to shoot, right? Then learn how to use the editing software you have. This is an EZPZ fix for someone who knows what they're doing, particularly from a camera with the dynamic range the D7100 give you. There are obviously enough details in the shadows for you to be able to pull them out and minimize the differences in light levels.
Finally, think hard on passing up some gigs until you get this stuff under your belt. The only thing worse than not working because you're not ready is not working because no one wants to hire you.
