Also take a picture of your smart switch setups.
I have used multiple managed switches with other vendors and vlans without issue.,
My questions is diid you read this, if not you shoud.
(plus put all the ports not wan ports on the same bridge).
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
If there is a reason to keep one port off the bridge its the last port 5, in case the bridge config blows up on you due to admin error and is no longer accessible.
keeping port 5 and off the bridge and assigned an IP address of 192.168.8.1 for example should allow you to attach a laptop and gain access without having to reset the whole router.