Congrats on two very strong acceptances! Go where you will be happiest overall, no need to worry about minor details.
School-wise, you are looking at pretty similar options. Both schools have great opportunities and will be able to lead you where you want to go (if you want street/global, then go UCLA though). Either curriculum is fine and both are pass/fail. Both have great resources. The plane ride difference is negligible.
However, there is a huge difference between living in California and living in Georgia. While Atlanta is more modern and progressive than the surrounding areas, you will get most of the baggage and legislature that comes with living in Georgia. If I am reading into your factors right and the culture/demographics are important to you (international, ranking gayest cities, wanting large Asian population), then this may be an important point in the decision of where to live for 4+ years. Cost of living is important though, so if the cost difference between the two was astronomical then I would certainly go where it was cheaper. If it is a reasonable difference in loans, I'd go to whichever city environment you'd be happiest in. Having spent time in both, the cultures of those cities are often quite different.
