No worries - I had not seen your update but appreciate your effort.
OK, given that you have a range of EF lenses rather than EF-S glass, and with the following summery as I see it:
A FF sensor is best for portraits, low light work, wide-angle work
An APS-C sensor offers a FoV boost for wildlife and some sports.
You are shooting images with a range from digital, through year books to quite large prints.
That would normally suggest two cameras a FF and an APS-C unit, but I am going to not head in that direction. To be honest I am not convinced that the current line-up of APS-C sensor cameras is right at the present and have avoided getting one, even though I shoot with very long lenses myself. So, I am going to suggest that you consider the Canon EOS R5, which is currently the top general purpose camera from Canon. It has a 45MP FF sensor, but offers the ability to shoot in APS-H (1.3 x) and APS-C (1.6x) crop modes and you can switch between those modes quite quickly. If you were to shoot in APS-C crop mode, it would render images of about 17MP, which is pretty close to what you were getting from the 7DII, but requires only one camera.
I have shot in both all those modes and had no issues with quality, and I would expect much the same for you, given your L lenses (I had the 28-300L and was rather sad I sold it). It should utilize your current EF glass via the Canon EF-RF adapters.
The R5 has a lighter body, uses the same batteries as your 7DII, can use a battery grip, although for weight reasons I suspect you may pass on that, is weather sealed and has a great focusing system with eye and face detection. It also has excellent video capability - but that is not my area of expertise, so I shall leave that to others.
As I understand it, this body is on sale right now, so it should not break the bank. The model is listed on Canon's refurb site at a great price: Shop Canon Refurbished EOS R5 Body | Canon U.S.A., Inc. These cameras may not even have been used, but if so, will be as good as new (some argue better) and come with a warranty.
cheers, TREVOR
The mark of good photographer is less what they hold in their hand, it's more what they hold in their head;
"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris
