Regardless of the type of music you listen to your equipment should have as a minimum low distortion, wide bandwith and flat frequency response. Obviously, hip/hop/rap requires strong bass capabilities which you seem to have covered with the subwoofer. The Wilsons would nicely compliment your system, but rather than the Cubs, you might want to find a pair of WITTs.
Better music reproduction systems should be able to handle everything from Mozart to Ella to Pink Floyd to Wu-Tang.
Natalie, I'm truly surprised by your elitist response.