It looks as though there the will be more room between the second GPU and PSU. Although I cannot confirm this until I do the switch over. But if you have a good look at the photo, there seems to be a bigger gap between the top of the PSU cutout and where the PCI cover plates are... but like I said, I wont know until I do the switch..
and I only have 2 drives and a DVD drive to go into the case. Im thinking of placing them all together in the top (god willing the cables reach) and that would leave the bottom 3 free for air flow.