Help setting up simple home network

So I followed a couple tutorials and used the WAN+2LAN2 wizard.  

Settings:

Internet connection type: DHCP

Firewall: Enable the default firewall

Bridge LAN interfaces into a single network was checked.

LAN ports (eth2, eth3, eth4) 

Address set to: 10.0.0.1 / 255.255.255.0 

DCHP enabled

After saving this and rebooting.  I then went into the services tab and tweaked the DCHP settings (mainly the range).

I have my cable modem plugged into ETH0.  For testing, I have my macbook plugged into ETH2.  I can't for the life of me access the internet.  I imagine it's something stupidly simple.  When I look at the dashboard, i see the IP address that gets assigned to eth0 is a 174.xx.xx.xx / 120 address. 

Any suggestions on where I might start too look?  Thanks kindly.