Not that great of a deal, they had the same kit with a small tripod, bag, extra batteries and 2 SD cards for $750 back in may. The fact that the a6500 was just announced should mean that the price of that kit should be even lower now, I would return it while you still can and find a better deal.
ETA the 16-50mm lens is an excellent kit lens, relatively sharp all around and gives you coverage for the most common focal lengths you will be using on your trip. In order to get decent sharpness out of the 55-210 you will have to stop it down to about f/8 or so depending on the distance between you and your subject. Haven't noticed any issues with vignetting.
You also have to take into account the 1.5x crop factor, the 16-55mm lens really shines in this regard. The only things I don't like about it are the powered zoom and the lack of a focus ring.