Don't get the wrong idea when I say simple. By no means am I downplaying what you've created here - I can hear all the different instruments, transitions and such going on. All of these come together to make a pretty neat sounding song. However, you even said it yourself in your initial description, "epic journey/menu screen sort of thing." Well I'm merely saying it fits the latter of the two better.
Also, this line?--->"Much more so than many other songs I have heard and produced." *shakes head* Far be it from me to judge, but let's not get TOO ahead of ourselves shall we? I'm no professional, but posting with that mentality will only get you shot down quick.