No, no full HD option, but that isn't necessary. If you go on "edit", just underneath the pic you'll find "display options", where you can set the size. 1600 pixels wide would be really fine, or at least 1280.
That's your decision. I'd like to see more details without buying a print and for that it mustn't be the original size. I submit my pics usually in 1600 pixels wide. If somebody steals my art - that's really bad, but it doesn't ruin me. All others have more fun.