I've got a Schmidt EDelux mounted centrally under the stem; a B&M IQ Speed Premium which I'll move to the left of the bars; I've made my own replacement battery which should last the whole ride*, so the dynamo is there for backup.
For rear lighting I've no dynamo light, so I'm fitting two Smart lights each with 60h run-time, on the left seat stay.
* I used this light in 2015 with the original battery. My home-made battery is lighter with 50% more capacity. I had carried a second spare battery which I never used; so this time I'm going to take a single battery for the whole ride. I didn't use a dynamo last time so had two B&M lights just in case one failed.