As for your first point mate I live in London so space is more expensive then pure gold.... ant that monitor on the right is 32" so the set up is a lot bigger than picture is showing. I do have to admit that my desk is a little small but I'm not getting anything now till I finish upping my PC to the standard I want it to be.
That thing on the shelf is a bluetooth speaker and is only half the deep so there is a lot of free space behind it.
Would just like to say i wasnt dissing your setup, only meant that i wouldnt be able to cope with that as i dont like having things cramped up. so props to you for making the most of it.
and good thing about the speaker, just wanted to mention it incase it caused PSU problems in the future
also instead of RGB/LED fans, why not just get some good quiet fans, whichever you like and then add some LED strips inside the case instead? in my experience the strips give off a better light anyway