I took the plans and modified them a bit to build what we were looking for. - I used 2x8s for the top of the table so that the middle board could have two removable sections that could be used for ice buckets for drinks. I made those out of plastic planter boxes. I also used 4 2x4s across the top for support.
The last major change is that i used corner brackets and bolts or screws to attach all the pieces. I liked the industrial look it gave the table and benches.
Everything was sanded down and finished with a drift gray stain and seal.
The building part was easy, but sanding and staining prior to putting it all together is what took most of the time. It was probably an hour of cutting, an hour of building and the rest was sanding or staining.