I don't have a problem with your color choice - but I do have a couple concerns. As stated, stripes can be great and terrible at the same time. Make sure you plan a bit and have them going the same way. One idea is to cut them diagonally for a neat effect, just be careful because it is a bias cut. The other concern is the pink with small squares. This will depend on the block you decide to create. I would use this in a very small way. Like the idea of the small center square of a log cabin or the size of a cornerstone in sashing (I don't mean to use them like that, just trying to give you an idea of the small use of that fabric). BUT, having said that, one of the important things about fabric choice is that you like the fabrics. It keeps the process fun. We have all made odd choices of fabric combos, but that is how we learn.