Daaaaamn. As far as RTJ goes, you got the drum programming and choice of drum sounds down PAT. Sounds just like 'em.
For the rest, I wouldn't know how you'd approximate that apocalyptic El-P vibe. He has oodles of synths, which results in really sharp, colorful sounds that contrast with each other in really cool ways. Here, the beat was kinda stripped down to a minimalistic 'what can I do with this vocal sample' which is cool. You got quite a bit of mileage out of it. I'd maybe add some more stuff in there. Crazy melodies and whatnot. Loud high pitched g-funk synth whines, distorted bass, maybe some adlibs or one-off samples or something, idk...
But yeah, great work with this track man!