Neither. You have to have two alternates as the weather will be below your requirements within +-1hr ETA. You will be restricted both by vis (can't convert to RVR since you say metvis required) and cieling from 11z onwards.
Don't know what airport EGGW is but it sure has quite ****ty approach aids according to this example.
The rules on how to interpret these groups planningwise are not written in stone anywhere else than your OM, that I am aware of. Where I work the basic rule about a BECMG group is to consider a deterioration and disregard an improvement.