Like the beat in the beginning, but I think the hi hats ruin the origonal beat that you used, had a much better ccharacter than the one you bring in a few seconds later. IMO turn em' down or just use the first beat you had.
The bass is a nice grower, needs a bit of eqing in the ranges of 80-100Hz, but the beat needs to be amped a little, give it a bit more "umph" than it already has; it feels a little weak. Other than that it sounds like a solid chiller.
Steve