If I can't comfortably ride a road on 43mm tires, I will just ride a different road. I suppose I would slap 50mm tires on the bike to do some epic low maintenance ride if the opportunity presented itself, but for all actual riding in reality, a 43mm tire is great for my weight, speed, comfort, and road conditions.
For lighting, I use the same lighting I have for any other bike- a garmin varia in the rear and a cygolite in the front. They both attach/detach quickly so I just move them when needed and ride.
If I rode crazy 350mi fravel races in March, then maybe a dynamo powered lighting system would be best.