I am having a love/hate relationship with my R6 and 100-500 purchase. I love the camera and lens, with a few exceptions that I really hate. Most of those exceptions could have been avoided if I spent the extra money on the R5.
My biggest problem is adjusting to the mirrorless system. It doesn't seem like a big deal, but not being able to look through the lens until the camera wakes up is taking some getting used to. With a DSLR I can watch the birds through the mirrored viewfinder, even while the camera sleeps, and wait for the right moment to take the photo. With the mirrorless system, I have to keep the camera awake and chew up battery power just to see what the lens sees. It's a little thing, but being mirrorless frustates me at times and is taking some time to adjust to.
Beware of the ridiculously fast shutter speeds, those 45MP RAW files will take forever to load and viewing large batches of photos can quickly become a tedious chore while you wait and wait between each and every photo. My 20MP RAW images cause delays in viewing so I can only imagine the time needed to view 45MP images.
Good luck with your purchase, @chipperatl, I'm sure you'll enjoy it.