Thanks for posting your question on the forum!
I am assuming you want to assign the static IP addresses so you can use them for 1:1 NATs for the switch and wireless router. You can assign the other 2 static IPs as secondary IP addresses on the public VLAN interface.
If you want to assign those other 2 static IP addresses directly to the wireless router and switch (and they are part of the WAN IP subnet), then you will need to assign the ports that the switch and wireless router connect to on the 3448 to the same VLAN you created for your WAN connection.
I hope this helps, but please do not hesitate to let us know if you have any questions.