Neat
Hey man, I really think you're onto something here! When I heard that opening I thought (man that sounds famaliar!), then i read your description and it said that you used the ffx song, and it struck home.
I think a hip hop version is definately a welcome break from the original, however I also think you should mix it up some more. That constant hi hat throughout the whole song lost its power after a while you know. Those soundeffects you had going on there was also a pretty neat idea.
I also think that kick should have been louder, also reverbed up the ying yang, for that surreal feeling the ffx song has.
Anyways, great stuff, the ending was redone, so good work with that. I think the song has potential but still more diversity would have been a great addition.
Keep them coming Yumbo-Yak, good stuff.