Hi, I love your build and I am building a similar set up with a Ryzen CPU instead of intel. I know it has been a while but I have a few questions.
1) I think the imgur posts are down, I can only see a couple of the pictures. Can you send me the links to the imgur so I can see how it all fits together?
2) The 1660ti space is really tight and currently unsupported, did you screw to the card to the back of the case?
Mine card seems to be at a weird angle (more diagonal than square with the motherboard) and can't seem to screw to the case and I'm worried about the card moving. Not sure if the card ears are too long and cause an issue.
3) Also did you do anything to support the card? Since I can't screw the card to the case, I would like to have some sort of support for the card, just wondering if you did anything like that so card is a little more secure.