People used to pin a lot and thought this will bring them success on Pinterest. But with the recent Pinterest Update, there is one thing that can make or break your Pinterest success and it’s creating “fresh” new Pins every single day. Publishing 5 fresh pin a day is better than re-pinning 10 pins which will not bring you any traffic.
I hope this post was useful for you!
Agreed with the other comments here - Pinterest values fresh, quality pins vs. quantity. I've had a good experience with less than 10/day.
It's great you have an endless resource of content! It might help to trim down that amount by taking seasonality and trends into consideration, vs. just cycling through 60,000 pins randomly.