Since as i understand it is your first big job there is a lot of studying you should do…
The answers to your questions is simple, since you want to use VLANs there is a need of 1 Bridge only… You will create as many VLANs as you need for your WiFi, cameras, TVs etc under that unique Bridge…
Notice, that all devices under the same VLAN can talk to each other, as far as Layer 2 Activity is concerned (VLAN itself is a Layer 2 Protocol) and in case of Layer 3 activity e.g. different subnets (InterVLAN), they can still talk to each other unless blocked by firewall… So, make sure you place under the same VLAN the devices that must have Layer 2 Connectivity and then you will not have to do anything else… Thats why VLANs exist at the first place, to segment your network… My advice is a really carefull planing and network design before you start configuring anything, otherwise you will get lost…
As for the CapsMan and the SSIDs i personnally like to create different SSIDs for 2.4Ghz and 5Ghz bands,
A nice article to begin with your VLAN:
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1