nothing much we can do about that then, guess he will have to sacrifice performance to meet his personal preference.
ask him which full tower case he prefers so we can build around it
https://ca.pcpartpicker.com/products/case/overall-list/#t=4&sort=price&Y=600000,600056,5600000,5600006

This post was edited by Secksii on Aug 2 2018 03:38pm

he liked this case

https://ca.pcpartpicker.com/product/sYgPxr/deepcool-case-tesseractswred

that's a mid tower, not a full tower he personally prefers
if he meant a mid case, then itx won't look as bad compared to the full, just make sure he's okay with that. If not, just stick to the atx