Check out the link below and you will find a great site that deals with Nimitz class aircraft carriers.
http://www.carrierbuilders.net/
There are plenty of images of the real ships, plus models of the Nimitz class ships.
There is one model of the USS George Washington CVN 73 that is in the section called models in dry dock that you should check out it will give you some good ideas for the hanger deck on your model.
I am building the same model as you are and I am converting it to the USS Abraham Lincoln CVN 72.
Do your research as there are so many inaccuracies with the Trumpeter 1/350 scale model of the USS Nimitz.
I have had to rebuild the island structure, side details on the sponsons and flight deck details.
Even if you do it as the USS Nimitz in its 1975 configureation, which the model is based on, it is still not correct.
Hope this helps you.
Regards,
Beau.