Forgot two last things I need to use my soldering iron for - the switch for when playing GBA games so it boots properly (ie extra grounding connection), and also connect the two fans to power. Job for tomorrow.
Pics look bad, that happens when I take photos in my project room at night.
Leaving the button grey so it has contrast. Going to make a washer the size of the GameCube button, and paint it the colour of the case, the hole made was pretty good considering it was made after the button holder had been superglued into place on the other side, however I want this to look better, so a painted washer will do that.