Welcome to Tom's Hardware Forums,
You have a strange motherboard standoff system which leads me to believe your board's form factor is SSI EEB. I would look at full tower cases, specifically for ones that support SSI or HPTX forms like the (not limited to) LIAN LI PC-90 http://www.newegg.com/Product/Product.aspx?Item=N82E16811112338
Hope it helps