first time building

this is my first time planning and building a pc, I used a laptop before. I did ask another redditor with help and adjusted some things but this is the final result.

you can see the stuff I chose here https://geizhals.de/wishlists/4596780

what do yall think? and are the fans enough like that or should I buy more? Will I be able to mount the GPU vertically so you can see the leds?