Hey Mike,
if you’re just starting out, don’t worry too much about the exif stuff. This is only if you use automatic exif grouping and encounter problems. I used it with the rotation tag and never had issues. Also, if you have only a few lens settings and not too many images, you can easily do it by hand, which I also do at times. You will loose the auto rotation in RC, which was added not too long ago because if you have to add Control Points it can be quite a pain to do it on rotated and not-rotated images at the same time. So it’s a trade-off…