All the worlds I've seen built by me or others have surfaces that are mainly water. Is it possible for a habitable world to exist if the world is mainly land? I'm only talking about 55-65 percent land. Other than that, it is exactly like Earth for all the reasons you need to know.
According to this paper discussing life on exoplanets:
Rocky planets within their star's habitable zones have the highest priority, as these have the potential to harbor life.
So, apparently the percentage of the surface which is water does not play into whether life can exist. The primary factor for having a potential of life is being within the habitable zone of their star.