You have a photo of my Orbea bicycle - Got the Sony to GoPro mount from you via shapeway, but the GoPro stem from another seller on shapeway.

But I almost done with assembly of a 2009 Fuji SST 1.0. That is the one I need to get setup, as it is the one I will use in the Seattle to Portland Event in July. I do approximately 140 miles the first day and last two times have had about 2 hours of setting Sun where I needed to light the road and be seen on the approach to over night lodgings in WA. This time I will have 2 of my almost adult children with me, and will need better lighting than I had.

I was looking at these lights - Made for upside down mounting - But @ $400+ for a pair think I will choose different lights with battery power.
https://www.flickr.com/photos/7516215@N03/16336896914/
https://www.compasscycle.com/shop/co...light-hanging/

Look at the custom Light & Camera mount on the Trek Madone 9 -
Trek Madone 9 Series first ride review - BikeRadar USA

I do not like the adj usability of this mount, but maybe it is necessary and solid enough for GPS and Light? But is still it only addresses two devices.
http://tinyurl.com/htl2w6q

Maybe better: I need to ship the Glub-G-559 to you so you can make a 31.8 shim that has enough compression resistance to allow modern bicycle device to be mounted on this well made forward bar mount. Having difficulty locating Lights that have a lens that can be rotated 180 or lights that are designed to be hung from a mount. Guess i need to open a new thread to ask that question.

JR