I'm pretty sure posting this is fine. As long as someone doesn't post something from an actual DT release. People post covers or even live bootlegs all the time.
As for my take: props for doing it. Not bad. To me it sounds too much like its trying to be an epic. I'll take the original
How was it recorded? Did you just play keyboards and record it raw? Regardless, wish i had that kind of talent to put something like that together, even if it was just for fun.