Sounding soooo good mate. The production has hit such a high level, i really think you have the potential to go places soon enough. The track itself is great. From an A grade comparison, everybody else is right, get the sub in the right octave and get it nice and phat. What i tend to do for subs is tube it, compress it, then lowpass it. That's what works for me anyways.
Also, maybe try and vary up the bass a bit for the choruses and verses, just to stop it getting to repetitive. And lastly, if you listen to the track and you
think you hear a bit of emptiness in a few sections (i would say the first 16 bars of the first chorus), then you should probably fill it up a bit, with FX, high hat fills, whatever.
The track, is awesome and happens to be in the style that i love.
I'll be following your progress, and would love to pitch in where i can, because i'm really digging your stuff. Keep it up mate