Just my opinion, I think it is better to rotate the PSU, making the intake fan of PSU facing forward so it can take a direct cool air. Make your front fan as an intake and install 2 more fans. one at Top as an exhaust and another one at the bottom as an Intake for GPU. Using slim fans will ease your works more!
@@FavoniusNavy AIO is just easy to drop and say..rather than Water cooling, then me who has done real custom "water cooling" builds all the time looks and freakin sees a tiny AIO gets cofused..