Single ethernet port setup using a managed switch and Vlans

[cloud200]

I just wanted to know if something like this is possible before I waste time on it.

[Managed Switch]
         |–-Port 1/Vlan 10: Modem in bridge mode
         |
         |---Port 2/Vlan 10+20+30: PFsense router
         |
         |---Port 3/Vlan 20: Wifi
         |
         |---Port 4/Vlan 30: LAN

I want to connect the modem to port 1 set as VLAN 10.
The pfsense box would be connected to port 2 and trunked to VLANs 10,20, and 30.
Port 3 would be connected to a wireless access point.
Port 4 would be set for the LAN interface.

Does any of this make sense or am I just being an idiot?

thanks

[wallabybob]

That looks fine to me. You then configure three VLAN interfaces on pfSense, one for each of the different VLAN IDs.

[cloud200]

Thank you,
Its the first time that the entire concept of VLANs actually clicked for me so I am just a bit unsure of what is and isn't possible with them.