Depending on what SSD you are planning on putting in there, ventilation might not be enough. Faster SSDs tend to run pretty hot, especially Samsungs.
Yeah, I have a Samsung 970 EVO in it. Gets plenty hot. So I'll be adding vents to the top side. Probably wide and diagonal so they won't need supports. Or I could just make that whole side a "window" like a giant open blank spot. Ideas, ideas...