Fire the committee. No great website in history has been conceived of by more than three people. Not one. This is a dealbreaker.
Many websites say, “look at me.” Your goal ought to be to say, “here’s what you were looking for.”
Start with design. Don’t involve the programming team until you’re 90% done with the look and feel of your pages.
(Do) not to create an original design. There are more than a billion pages on the web. Surely there’s one that you can start with? If your organization can’t find a website that you all agree can serve as a model, you need to stop right now and find a new job.