Track is straight blazin' Great job, fo' real!!
As an arranger certain instincts just kick in so pardon me for the unsolicited input I'm about to give.
The intro would be best suited as the part/main and the part/main as the hook. It's rare when an intro grabs a listener so when it does you gotta take advantage 'cause you only get a few seconds to impress. In your case, you did just that and then some.
The sample is powerful too but should come in as a part of the hook. Should also be a tremendous highlight of the ending of the song as well.
Just my thoughts. All in all it's still a banger.