Mickey - A split fence is easy enough to make for your router table since you don't have a split fence or a joiner, and you're trying to make a "fence" as a backer board, why don't you go with shiplap? Easy enough to do with your router table
Sorry for the double post but I got a little ahead of my self.
In my previous post I was trying to say that a split fence is easy enough to make for your router table if you want to joint edges. See this pics - the front faces slide and the outfeed fence has a piece of arborite that will shim out the fence just enough for joining.
Mickey - tongue and groove will look good too. A split fence will come in handy, especially if you don't have a jointer.
Be sure to post pics of your finished project
Mickey did way better than that...WOW! That turned out great, I love the contrast of the softwood and the hardwood.
Good Job.
HErb
Nice final result. Did you make your split fence yet?
Excellent job, Mickey!! Where will that hang or be displayed? Sure looks nice.
David