I’d say 4 hours (0800-1200) every other Saturday would be a fair compromise for not having to work outside the hours of 7&5 all week. You wouldn’t even miss the lunchtime kick offs on your Saturdays in & you could still stay up late on the Friday.
If the money was right & it was fairly local, I’d be all over it.
Stop dreaming of 6-2 Mon-Fri for top dollar guys, it’s not happening!