This is the way I setup my VLAN’s on the version 4.7x firmware.
Also, be mindful of this apparent bug in the LUCI GUI when applying VLAN settings on the br-lan bridge device. Whenever I modify any settings on the br-lan bridge device, I have to ensure that the ‘Enable VLAN Filtering’ checkbox is not checked or it kills the br-lan network.
I’ve changed a few things since I first configured it so these screenshots don’t exactly match what I wrote up.