Say, I just listened to some of your stuff.
It's really good.
Love your lyrics. Far more advanced than what I'd normally hear from dudes your age.
Honestly, though, given the style of music you're doing, I'm not sure that an expensive mic is really what you need at this time.
Especially something like
the BLUE kiwi, which I might normally associate with typical pop music-type crooners. Not necessarily the more aggressive/expressive style rap vocal. For that style, you almost want something a little less forward so as not to accentuate the heavy esses and consonants of your voice to the point that it may wind up sounding harsh to the ear. A common catch-22 type pitfall with a lot of condensers, even the better, more expensive ones.
Honestly, if I had your voice and vocal / lyric style, I would work on the rest of my signal chain -- starting with my tracking room accoustics, working my way through the mic pre to the signal processing on down the the monitors and mixdown environment. Then I might worry about saving for a better mic, but only after I felt very comfortable with my recording/mixing knowlege. And even then, I might have a look at some good dynamic mics -- think Shure SM7, Electrovoice RE20, etc. Come to think of it, the RE20 would be a great fit for your style.
Good luck.