Honestly they won’t all ripen at the same time. You’ll need to check and pick every day or two. Shelled peas freeze well, but I dunno about whole beans.
I suck at canning, but also I checked the seed packet and it says they should produce every 2 weeks till the end of the season and that might fill my freezer if all the flowers are an indicator of things to come.
They are an indicator, lol. As you harvest you'll induce more flowering. I harvest my pole beans weekly and have a metric ton of the things once they start going.
You know what, if you compare it to my older garden photo you can see how hilariously small my trellis is compared to the actual growth. I figured they would grow up the fence I just didn't think they would colonize it.