Tami Jo,
I applaud your rationale and decision.
Congratulations on your NEW D7000 purchase, you are going to love it. The D7000 is a wonderful camera and the images it produces are of high quality. I have no doubts you will be extremely please with your new camera!
I think you made a wise choice. To save $300 and then have grief, send it in to Nikon for repair, etc can be very upsetting and expensive. For lenses, I don't mind taking a chance on used. For an old camera body, I also don't mind. For your main camera, you made the best decision.
I can hardly wait to see the pictures you post up, taken with your new camera!