ehhh
i thought it would actually be 8 bit. the drums are definitely not 8 bit and it's definitely not adhering to 4 note polyphony. That's not why you get a 7 instead of a 10 though.
i think you could afford to bring the volume on some instruments down. the kick drum sounds like its clipping when it rolls and follows the snare. a lot of the synths seem to be playing at maxed volume. seeing as it's not _truly_ 8 bit you can take some more liberties with dynamics and composition.
the melodic/harmonic structure is quite sound. the stereo image of the drums is quite nice, too.