I tried your suggestion of using a guassian filter. I ranged it from 2-8 and while it does get rid of the pixelation, I lose a lot of crispness from the overall image. Is there some way to just grab the edges of the land mass and apply the filter then?

If not, then I guess I am gonna have to start from the beginning again or deal with it being pixelated/blurry. At this point, I think having a slightly blurry picture at 300% zoom is gonna be worth it.