4-Way Z-Wave Switch Installation (No Neutral & line/load to light)

Hi Team. Well, after forgetting to take a photo of a dimmer in a 4-gang outlet, I had our electrician come in an wire everything back to normal again. Literally 2 hours later, this is what I am working with:

The takeaways, no neutral, power starts at the lights and, ideally, would like to change the existing dimmer with an Inovelli Black Dimmer, with the other 2 switches being swapped with GE Aux Switches.

Will it work? Or could I install an Aeotec Nano Dimmer behind the first light where the line/power comes in?

Many Thanks! Deryk