I like what you put down. I do have a question though. What is the virtue of using a motherboard without integrated graphics opposed to using one with. Keeping in mind I would still want to use a good graphics card.
You can use whatever graphics card you want with either motherboard. I guess you just have to ask yourself if it's worth paying for an onboard GPU that you won't be using. The answer is yes to some people. They justify the price difference by saying you still have a functional system even if your graphics card dies.