fad, 5 GB of space is huge for a startup site. Unless you plan on hosting big files like music, software, documents, no one really needs that much space. If your requirements are this big, I suggest looking into a paid solution off the top. Not to mention that most free hosting companies are unstable and they do not provide good support. You don't want to spend 5 hours uploading your site just to find out you have to find another hosting a week later.

Best,