First, use something better than WEP, like WPA with a strong passphrase (long, including upper and lowercase letters, numbers, and symbols). That'll keep out unauthorized users.
@mechanicalmetal:
Also you say to bridge my wifi router into my WAN network on pfsense, wouldn't this be a security issue since my LAN is pushing out the protected network? Should I just go into my router and select static network and plug it directly through my home network?
You can firewall on a bridge no differently than you can on a routed or NATed interface. If you want them both on the same subnet, that's your only option. You can't have two identical subnets in two separate broadcast domains, so bridging is the only way to use the same subnet on both the wireless and wired networks. It's usually the most desirable for home users because it's the only way things like Windows network browsing will work properly.