Hi John,
Alex Mustard put together a couple videos on settings he uses. (Note: the a1 and a7RV have the same menus.) It is broken into 2 videos. I found these very helpful in general, including capturing small subjects. I am sure others will have specific feedback as well.
One of the biggest adjustments I have done with mine is setting custom buttons and custom menus. It really helps in the real world to quickly make the setting changes as needed on the fly.
Enjoy your new rig!
chip