My setup for scanning negatives at home is, a tripod, cheap light pad, fuji xpro2 with 23mm f2, chinese made macro extension tube (3rd of fuji equivalent prices) and a homemade negative holder made from mount board to keep the negatives flat.
I’ve attached a sample image.
The main challenge for me is the last bit as using the macro extension tubes makes the focus plane very narrow and any slight curve in the film can render parts of the image out of focus. You also need a really steady tripod that can be micro adjusted to ensure you are shooting parallel to the image.
With the X100T I guess it would be best to do a quick and dirty test to see how good the macro capabilities are. You may not need all the detail in the world and cropping into the image might be sufficient even though you’ll lose a lot of detail.
On the same subject, I recently learnt a useful (i think already well known) trick for quickly reviewing negatives. That is to set the ‘Accessibility options’ on my iPhone so that I can invert the screen on the phone, which when viewing a negative through the camera, turns it into a positive image. I’m sure other phones would have the same options.
I’ve bookmarked some useful tutorials on how to invert the image in Lightroom if that would be useful?