again, why do you need to use bridge or switch at all?
why did you buy a router

?
i well tell you
I have 2 wan here in the router for loadbalancing
6 port are bridge because i havent any place to put external switch .
the router do many thing for me like
1- load balancing < in feuture .
2- hotspot & broadband < for my clients .
3- VPN for me when i want to enter and change any access point for my client when am outside my network.
4- radius for my other network all my network take the authintication from this case(network with alone ISP) .
thats it in this moment... i know it is a simple network and simple work... but that is my knowledge until now..
in wireless am do every thing but in router am just zero in the left side !
give me you suggestions normis
i have maybe 100 pcs from your company ! i well never leave hotspot.. and i need Vlan to more secure... how can i do that with interface bridge !