The idea is good, but you can make more with it : minimalism isn't about using little instruments, it's about using them at their full potential. An exemple would be your arpegio, they can moove a lot more : not trough musical notes, but through the mix, with some filters, some lfo slowly changing the panning, even some crazy effects used here and there to make the base sounds you use through the theme travel more ! This way you can keep the (very cool) minimalist approch but make it purposefull.
Otherwise the composition is good, the change in tone around the 3/4 is a nice touch.