Configuration as router to WAN for 3 VLANs

I have to use the Hap routerBOARD to forward the traffic of 3 VLANs to the modem/router of Internet Provider.

The network is managed by other Switchs whit the different VLANs.

I did 2 different configuration, but I don’t know what is the better.
Scenari.png
In first case I connect a cable for each VLAN to the different ports on MicrotikRouterBoard arriving from the corresponding ports (of same VLANs) of the star-point switch .
In second case I connect the cable on the port of Microtik router that accepts differents VLANs from the trunk port of star-point switch.

The first solution is to create a bridge one for each vlan and then assign different IPs of different VLANs to each bridge in IP address configuration,
BridgeExample.JPG
BridgeExample IP Address.JPG
I think that this solution is an hardware solution because I see “HW offload” in bridgeport configuration. Is correct?

The second solution is a software solution in interface configuration:
InterfaceExample.JPG
InterfaceExample2.JPG
and then I assigned the addresses to each
InterfaceExample3.JPG
About you what is the better solution?