Yes i am here and read it. For my personal images i don't crop until i know what i am after; vertical from a horizontal, crop slightly for framing etc. i am not cropping the images, thats for the printer or whatever the studio/client does with the images. I set the size to 6x4, 300 DPI. To satisfy their requests i now set the size to 3200mp at 300 DPI on the long side via ACR. That should satisfy the request, but how pertinent is image size, say set to 6x4" vs 16x20" with both set at 300 DPI?
http://www.urban75.org/photos/print.html#:~:text=For%20a%2016%22%20x%2020,320%20x%20240%20pixels%20minimum