I strongly advise against uploading your book in its entirety. The purpose of putting up excerpts is to try and lure people into your story so they want to buy it to find out what happens next. Why would they buy it if it’s sitting up there where they can read the whole thing for free?
Earth’s Terra Prime fleet -a thousand cruisers gathered around an invincible Titan dreadnought- has enslaved the ’Free Planet of Light’. Three dedicated enemies must come together to save their free planet from a terrible invasion.