Nice build! What's the frame? The chainguard?
My main commuter these days is a single speed coaster, albeit with upright handlebar per my preference, and not quite as shiny.
My only nitpick is to suggest adding a front brake. I appreciate the appeal of such a bare bones bike, but every time I've gone without a brake, something happens on the next ride that makes me regret it. In addition to the rear wheel not providing enough braking power, weird mishaps can happen, like if your feet are off the pedals for any reason. Having a front brake means I can pay more attention to traffic than to planning how I'm going to stop the bike.