Good build, one suggestion though, as someone who bought an ASUS monitor himself I can say without question I regret not getting one with built in speakers because having to put speakers on my desk takes up a lot of room. It's one of the things that if I could go back and change I would, as it is this monitor is less than 2 years old and I otherwise like it so don't plan on upgrading quite yet. See if you can get essentially the same monitor you've chosen but with the speakers. Unless you are already committed to specific speakers and don't have a problem with that.
EDIT: When I game I wear headphones but wearing them for EVERYTHING would be a pain so when I watch youtube and such I use the speakers. Just something to consider.