I agree 3-5 days and you should be perfectly fine.
When I was a teenager, I worked in a steak house, and we sold
"aged steaks". Of course these weren't old cows. It was meat that was turning.
I think they were aged agt least 10 days, maybe more.
I assure you, most diners, would have barfed if they could
see how the meat looked before we cooked them, or smelled the cooler.

They were delicious though.
The owner used to show me a steak, and have me smell it, to show me when it was just right.
Thats how he would tell.
To this day, I still prefer a nice dark purple/brownish color, with a faint soured-ish odor.