Took my d7000 for some night shots

[DiskoJoe]

The spikes around the lights are called 'diffraction spikes' and are cause by the lens aperture blades.

The wider the aperture used the shorter the diffraction spikes are.

As far as the DoF, DOF gets depper the further away from the camera the focus point is. You used a 50 mm lens at f/10. According to an online DoF calculator, using a 50 mm lens at f/3.5 and a point of focus 2500 feet from the camera, the near DoF limit would be 115 feet from the camera and the far limit would be infinity. Even with your point of focus at 5000 feet the near DoF limit only increases to 120 feet. The far DoF limit will stay at infinity.

The white balance in you photo needs adjusting.

I was also struggling with the white balance. What do you suggest I use? I tried tungsten and everything looked too blue. This was the closest I could get to the actual picture.

Shoot at a better time of day. Closer to sunrise or sunset or very soon afterwards when the sky is still a deep blue and has not changed to pitch black yet.

 

[DiskoJoe]

Thats

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<img src="http://i1122.photobucket.com/albums/l524/kbarredo/nighthill.jpg" alt="" border="0">

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There are 2 main light types in your photo. Low pressure sodium vapor, the orangish-yellow lights, and mercury vapor lights, the bluish-green lights.<br>
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<img src="http://i307.photobucket.com/albums/nn290/CougarWilbur/nighthillEDIT.jpg" alt="" border="0">

Thats actually what the original looked like. I was actually trying to get rid of that blue haze.

use the saturation tools and just tone down the blue then.