So here is my end product! I ended up with a 2'X4" because when it came down to it the 4'X4' was obnoxious lol.
Since it was made in four independent pieces I took the other two off to make end tables at a later date.
Above is the awesome boards with slots that hook into each other and they hold great! The base was also to tall on the first large table, you only want about 18 inches tall for your couch height. I stained them a natural wood for the edges and slats are stained Red Oak, I lacquered them after I assembled the table with 5 coats. Warning* that stuff is not messing around when it says use in a ventilated area!
When I got the table down to two pieces I notched a 2" wide slot with a hand router that allowed me to lay the tops down in and they set nice and level. We love this and the fact that we could make it our own colors. When I finish the end tables I will add it onto this blog so you can see the finish product.