To Bridge or not to Bridge?

Recently upgraded the bandwidth & got a new CGA4332COM

The old router, was a CGA4131COM for brief time & prior DPC3941B.

I have multiple public IPs. I had one of the former units setup in Bridge mode & it worked fine; but when I tried to setup the new unit with Bridge nothing was sent though.  It works fine in default mode, but should I move to Bridge??

The firewall behind the Comcast modem has a static Public IP on it's WAN port & multiple virtual IP's for for the NAT'd traffic. 

I need more granular data which Comcast's FW/site does not offer; thus my preference for my own FW

I have the Comcast WiFi turned off.