Thanks for the explanation.
I started receiving parts and began putting them together. The two things that worries me the most are the clearance for AIO cooler and RAM.
The Z53 AIO that I have is quite thick with 52.4mm water block height and 30mm radiator height. I did a test fit and was able to stuck that in between the PSU holder and case. The side touching PSU holder cannot fit with protruding screws, so I left that unscrewed. I'm still looking into ways to secure the AIO cooler similar to yours.
I was able to close the top panel without cutting the extra plastics for