For that size room, go bigger. A 72" round table, plus another 2' allocated for chairs to pull out for seating, is still going to leave 2' of space on the 12' side of the room (a little tight) but 9' left on the long side of the room. If you go with a rectangular table, which would be just fine with a circular chandy, you could go 14' long (seating 6 on each side plus two more people on the ends) and still have plenty of space for chairs to pull in and out. Are you going to have other furniture in this space?

From the center of the chandelier to the edge of my island is 68 inches. I am worried about spacing with the island. And I would like to have bar stools. Probably low profile stools.

I photo would be helpful since it seems that the chandy isn't centered in the 12'x19' space.

The photos help! I see that a round it probably not the way to go -- consider a rectangular table to seat at least 8-10. You have room for it and it would complement the other rectangular shapes in the room while still coordinating with the circular chandy.