Thank you! Sorry I didn't specify -- that last one is a whole plate, with Dallmeyer 3B wide open for 3 seconds. It is really windy here today and I didn't want to risk a mishap with the big setup.
I think I have a long way to go with 16x20. I feel like I can handle the whole operation myself (on non-windy days), which is important to me; I'm not so certain about 20x24.