Hi there,
Given the current problems with IPv6 on Mikrotik, I would strongly suggest waiting before you deploy it. Want to know why? Read these links…
http://forum.mikrotik.com/t/running-ipv6-on-mikrotik-youre-out-of-business-in-12-days-time/129015/1
http://forum.mikrotik.com/t/uknof-43-cve/128988/1
https://indico.uknof.org.uk/event/46/contributions/667/
Cheers,
Christopher H.