We initially ran a bridged network, then going through the forums and seeing the benefits of a routed network. We upgraded to OSPF Network. The only problem we are seeing now is that our entire network which consists of approximately 10 routers, all of them are on a single AREA (backbone). We've drawn our layout (as attached). All our routers (towers) have redundancy on fiber and wireless, except for Router 4.
Router 6,7 and 8 are connected using iBGP. Any suggestions are highly appreciated.