I tried them on the other day and actually I was surprised..the height didn't really bother me. I didn't notice the cut-outs being uncomfortable either. Granted, I only had them on a few mins, but they didn't pinch or anything. My issue was, I am normally a size 7.5 and when I tried them on and walked, my heel flew out of the back of the shoe..I don't know if a size 7 would be too tight though. That may just be my foot though.
I don't think the height will be a problem. The platform balances the heel out and I had no trouble walking around in them. I've tried them on at the house about 10 times and walked around in them for about 15-20 min. and they didn't hurt at all. I cannot wait to actually wear them!!
I'm wearing mine today! I bought them in the color you posted and they are so comfy. I just ordered a black pair today too. I don't feel the height at all.