This is almost like the layout I have been looking for. I'm so glad to see a sff case with room for big air coolers, but it kills me that you are choking off the air cooler by putting the power supply RIGHT IN FRONT of it. Why don't you lay the psu flat on the bottom of the case to get it out of the way and allow airflow from the front fan to get to the CPU cooler?! You have made a great airflow layout, but you stuck the power supply right in the way, it just doesn't make sense. Lengthen the case just a little bit to allow the power supply to turn sideways and not block the airflow path to the CPU cooler.
I'm also very happy to see that there is a vertical option for the case.