I did some searching in the Hypertufa section prior to posting but most of the related threads were from 5+ years ago where the picture links didn't work anymore.

So I am planning on building an outdoor dining table this year that I would like to resemble something out of a Restoration Hardware catalog or the like without spending the money to get such a table. I am good with my woodworking skills so plan on build a solid base for a ~8-9' table out Cedar and would like it to resemble something like this:
http://remodelista.com/posts/outdoors-bluestone-table-at-terrain
or the first picture in here
http://underspanishmoss.com/tag/jill-brinson/

My first thought was to make a Zinc tabletop, but without having a machine press I was worried my edges may look too sloppy...so I started thinking about Hypertufa.

My question is:
1) Is it possible to make a Hypertufa tabletop that large that I wouldn't have to be worried about cracks/splits?
2) If yes any personal recipes that would work well and look best?

I love the smoother Hypertufa look that gradually gets the small knooks and crannys but overall remains smooth enough for a rustic looking table top. I was inspired by seeing this in This Old House and was curious if this could be done on a much larger scale.
http://www.thisoldhouse.com/toh/how-to/intro/0,,20508086,00.html

Thank you all for your help!