I’d recommend against that stuff, it breaks pretty easily and once you break one lead, you have to replace the whole cable which is major PITA. I use standard ribbon cable with DIL connectors along with IDC headers which allows you to disconnect everything if you need to (you only use half of the connector). It’s strong and you never have to solder the ribbon to the board. Alternatively, you can just bite the bullet and use one wire per connection, its a lot of work but much more practical since if something breaks, its an easy fix