Try something unconventional to span into, like the black hole theme or Venom... Something that not everyone uses. I could see Sector Y in there somewhere, but it'd be nice to have a good build up to something that sounds really epic. Venom's music screams epic to me, since it's the last stage. But, that's just me. I am a StarFox fanatic.
As far as the song, I don't like the instrument that is the lead. It sounds very strange to my ears. I have always liked that being straight piano, but I know that's really close to the original track. As for the rest, it's interesting.