I have had both.
You will not notice any difference at all between 30mm and 1". None whatsoever.
Don't bother with illuminated reticule - adds expense and things to go wrong. The S&B 8X56 is more than good enough in low light not to need it. I've shot foxes by moonlight, lamp off, with one.
Either 4a or 7a reticule will do perfectly.