For starters go through this this tutorial, it should explain the way VLANs should be done.
When it comes to (virtual) wlan interfaces - you’ll have one per SSID: add them as access ports to unified bridge (set appropriate PVID). Don’t bother with vlan settings on wlan interfaces.
As mentioned before: configuration done according to linked document is SW based and hAP ac Lite will struggle bridging traffic between wired ports belonging to same VLAN (e.g. eth2, eth3 and eth5). But since ethernet ports are only 100Mbps, device should still be able to bridge everything wire-speed.