That's disturbing about the LED. All I do is order the same set of components each time for the control board. It's a saved cart. That means Mouser is trying to pull a fast one. Those stinkers. I really don't mind sending you one. Maybe I should stop trusting that I'm getting everything I order.
I would use this part for a connector on J1:
I would use this part! Isn't it cool that you can have regular writing be the hyperlink?!