Congrats on your success bass, well done. I'm glad that you mentioned your intent for the piece, because it certainly helps to listen with purpose.
I like your use of percussion throughout, as well as how you have it balanced. You have a very interesting synthesis of textures in this piece.
To me, it sounds like you have 3 distinct textures all occurring simultaneously - that sort of Rhodes piano-esque repeated chord-sound, the percussion section, and then that electronic twirly thing that happens every so often. I'm sorry, I'm just not sure what the name is for that particular sound.
Anyway, I mention this because you said that it's supposed to be like a progressive ambient house track. I think that if the percussion instruments had less of a crisp attack / articulation, and had more of a warmer, rounded feel, the percussion you have would mix with the texture of the background chords more completely.
The electric twirl thing really caught my attention at first - it was / is a very nice piece of color for the piece. I almost hate for you to use it so soon in the song, because it's cool sounding and I feel like there should be special emphasis on it - like used after the bridge or something. Perhaps you could use a softer sort of character in the beginning of the piece. Who knows, just ideas.
Lastly, the piano thinger in the background. I kind of wish it were louder so that we'd be able to appreciate the cool sort of ebbing effect that you have going on with it. I also was hoping that you'd get out of that tessitura a bit to change the color of the chord, but I understand that would change the feel. I think that if you even changed the inversion of it by just one, it would add a new dimension to the background.
I think that there could also be more tension resulting from the "bridge" so that when we get back into familiar territory it feels like it's more of a release into something familiar that we're celebrating in our drunken, sky-high morning daze. You could do something called "stretto" where voices (of instruments or sounds) interrupt each other before they can finish what they're saying. I think that this might prove to be particularly effective with the background thing you have going on. You could layer the chords with similar figures that share common tones, and have it build until you decide you want to release it, and then when you release it, introduce some big fat super-low bass line (not necessarily loud or gritty) that signals that we're back home.
But that's just me, and those are just a couple ideas. I think it's a good track that is effective in what you want it to do, but I definitely think you could take it to another level.
Keep up the tunes, man!