Really really nice. As someone who makes a lot of hip-hop style myself, I virtually cannot find anything to fault on this piece of work. I especially like the beatbox samples that you use, it just polishes off a really chill song as it is. I do agree with Virginia-Slimm in that it would do really well with a vocal sample, and maybe lower the subs on that bass you introduce at about 0:50 just to bring it out a little more in the mix.