Well, how do you feel (when looking at the picture, not the actual quilt) when you see the very center of your quilt with the yellow striped fabric? It kind of jumps out from that picture, and it's in a "pole" position of sorts. Does it bother you?
If you have a few more blocks with the pink fabric in the pole position, lay them out, take a picture and look at it on a monitor. Or, go to a hardware store and buy a door peephole and look at your quilt through it. This will help you determine if your pink fabric always in that one spot will bother you.
Hope this helps! I'd mock it up in EQ for you, but I'm so tired right now it would take me an hour. I expect Jan or somebody might be along soon with an EQ picture....