I've found a company that can build a bartop like this for me. I've ordered samples of the material and should be making a decision in the next few weeks.
I will then have to build the base, but I don't think that will be too hard. Time consuming yes, but not hard.
The bar top will be lit underneath by LEDs. We've already bought barstools, not like these but very nice. We get a lot of compliments on them.
I'm pretty excited about this project, can't wait for it to get underway.