the sample is pure quality!! the, like, "riff" is right up my alley, fits nicely.
overall id say you did a pretty solid job. drums are ok (nothing special tho aswell, could maybe need more fx and stuff), bass/riff sounds could overall just need some more work, dont sound as "finished" as they could imo.
id say polish it a bit, beef up the drums and the bass a little bit, and i could see this destroyin dancefloors all over.
edit: had a listen to some other songs aswell. with your jump up, basses and leads sound very solid and definately work, but you really have to get onto your drums, especially in the intros, they dont do it. apart from that, solid work!