Nice table and nice legs. I used those same ones on my octagon table. They are super heavy duty and turn on and off their base with a big stud. I have an oak pedestal but when I had to move my table they were very nice.
I think I'm liking the slide-under cupholders more and more. I may have to go that route next time - the table doesn't have a "someone's missing" feel to it if it's not filled to capacity.