The second person that you spoke with is correct. Your VR or nonVR F lenses will work with the Nikon Z6 or Z7 and the LTZ adaptor.
I know that for landscape shooting many photographers that should vidios use the lighter Nikon 70 to 200 F4 since the F2.8 is too heavy.
The FTZ adapter works well with all my Nikon F lenses. One of favorite lense is a AI 105 F2.5 lens from the 70's. This lense works with no degradation on Nikon Z with the FTZ adapter.
If you would like to see the Fuji 50R in action check out Adam Gibb on youtube. His newer videos, about since September 2019 he shoots with the Fuji. Prior to this date he shot with the Nikon 850. Adam is my favorite landscape photographer. Check him out.
If you shoot mainly landscape manual focus works very well. I even use Nikon's S lenses (that are made for the Z system) on manual. I use all my Nikon glass with focus peaking and manual focus works well for landscape shooting.
Some of your lenses will most likely auto focus with the FTZ adapter others will not. I shoot mainly landscape and I have my Nikon set to manual focus with peaking even for my Nikon S mirrorless lenses.
The Nikon FTZ adapter works with all Nikon F lenses. One of my favorite Nikon portrait lenses is from the 70's a manual focus 105 F2.5. This lense works perfect using my FTZ adapter. This lense has no motor.
When I bought my Nikon Z6 mirrorless camera I also purchase the FTZ adapter that allows me to use Nikon F glass with my Nikon Z. I don't know but I would think that a Cannon would have a similar adapter to to the Nikon.
I have Kirk L brackets for both my Fuji XT2 and my Nikon Z6. For my money the Kirk L brackets are very well built, fit perfectly and will save you $ over a RRS.
I would take the Fuji X100V. This APSC small camera has a fixed 23mm (35mm FF equivalent) lens, 26.1 sensor and its contrast, myriad of additional features and color science is exceptional. $1,399
I am not familiar with your Rebel. Do not rely on your camera's meter for B &W shots. If you can adjust your camera to show a histogram and manually focus to the center right you will move out of the "middle gray" area and yor B&W photos will improve considerably. Experiment with your histogram.
I use my Nikon 105 F2.5 (from the '70s) on my Nikon Z6 with the FTZ adapter quite often. This lens is a legionary portrait manual focus lens, is ultra sharp and works great on my Z6.
For landscape, I have my Nikon Z6 set to manual focus with focus peaking, turn off stability control since I use a tripod. Finally, I use manual control to set my aperture and shutter speed and my ISO is set at the lowest setting ISO 100.
For general shooting I use auto exposure and manual control.
I usually shoot landscape and have my Nikon mirrorless Z6 set to manual focus with peaking and I use the focus point and manual setting for aperture and shutter speed. ISO is set at the lowest setting for this camera (100).
For all other, non landscape, I use automatic focus and manual settings.
I usually shoot landscape and have my Nikon mirrorless Z6 set to manual focus with peaking and I use the focus point and manual setting for aperture and shutter speed. ISO is set at the lowest setting for this camera (100).
For all other, non landscape, I use automatic focus and manual settings.