One helpful way to ensure all your homepage content finds a place on your new homepage, is to map it out on paper. It's a nice way to visualize how the new homepage works and can be a useful presentation tool.
In this example, you can print your homepage and label each module:
Once everything is labeled, you can decide if it is important to stay on the homepage, or perhaps it deserves its own page elsewhere on the site.
Then you can map where on your homepage these things should go. Here is a PDF that illustrates the process.