There are good thoughts and suggestions here.

My thinking is this. Your commute is long. 17.5m each way. The default bike for you should be a road bike. Nothing's faster than that.

Give away speed only when it's absolutely necessary. Can you get away with a messenger bag, or a small set of panniers that can attach to a seat post rack? Are clip-on fenders enough for the weather conditions in which you'll ride? If yes to both questions, then stay with a road bike.

All that said, I commute with a touring bike, because I need the room that the large panniers provide. It's easy to underestimate the carrying capacity regular commuting requires, especially at first. For example, you may find it is even more efficient to combine your commute home with some shopping or other errands.

As for the lighting, I never understood generators, sidewall or hub. Battery lights are cheap, light, and much brighter than generator lights. And you don't have to waste precious human energy to produce that thin bit of light.