http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
More like frustrated that you never bothered to learn about the system in your own home for someone that is trained.
As stated I would modify the config to a more standard vlan setup until I was comfortable how LAGs and vlans worked and then that would be stage 2.
YOu have big learning curve and no one here is going to spoon feed the answers so you will have to learn.
If willing then help will be here.
The first thing you should post is a decent network diagram to provide the context!!!
Most homeowners dont have half the stuff you have, 2 port LAG though is common with NAS stuff.
Do you know what the EOIP is for ?
In Summary, adding a switch to a network you dont have a clue about is the wrong course of action.
Thats down the line for now.