Help with 'scanning' setup

I’m looking at ‘scanning’ some 6x17’s (Velvia 50, Ektar 100, E100). I formally owned a Heidelberg Tango Drum Scanner which is considered the holy grail of digitising film. Unfortunately it stopped working and I ending up selling it for parts given there’s no-one in Australia to repair them.

Given the above benchmark that I’m use to, I’m looking at the higher end of things. I currently have access to a Canon 5D MKIV, Fuji GFX 100s & Phase One IQ3 100mp. My preference would be to utilise the GFX 100s for this task as it’s the best combination of new technology/sensor size/user friendliness/colour. I would say that colour/gradation are just as important to me as sharpness.

Thanks to this forum I’ve discovered that scanner lenses are the go to for this type of work. I have rather limited understanding in this area and have no experience with bellows or focusing rails. I’ve been looking at both the Dimage 5400 lens and the Nikon Rayfact 2x (95mm, F2.8). From my research it would appear the image circle of the Dimage would be too small for the GFX 100s, will the Nikon Rayfact 2x (95mm, F2.8) be ok? Also I’d like to avoid focus stacking. Is someone able to confirm whether it will/wont be necessary?

Here are my current thoughts, I’d love to get some feedback/ideas.

Camera: Fuji GFX 100s
Lens: Nikon Rayfact 2x (95mm, F2.8)?
Copy Stand: Kaiser Copy Stand RS 1 with RT-1 Arm? (Open to suggestions)
Light Source: Undecided
Film Holder: Digital Transitions Film Stage? (Open to suggestions)

Look at the EFH (Essential Film Holder). It’s 6x9, but you can make left and right exposures of a 6x17 and stitch them together in Lightroom Classic or Photoshop. I have one I use for 35mm and 120 6x4.5 and 6x6. It is reasonably priced, solid, keeps the film FLAT, and does not scratch film.

I use a Viltrox L-116 LED Panel (CRI 95).

I will probably add a Lumix GH6 camera body for its 100MP stills capability (It makes as many as 16 offset exposures using the IBIS system and merges them with artificial intelligence to create a 100MP file from a 25MP sensor). I’m using a Lumix 30mm Macro lens which is excellent.

The Fuji looks great. I won’t talk you out of scanner lenses either, because they are great. My experience is that camera to film plane alignment of the negative holder is critical, as is film flatness. The EFH solves the flatness issue.

Setup details are here: