That looks a good combo to me. The i5 750 performs very well in games. You won't go far wrong with that. Unless as obsidian suggested you want the USB 3.0 support. The choice is yours. I'm assuming you have DDR3 memory already?
I can't really comment on the price since I'm from the UK but it does look a good combo.
Using DDR2 Right now, I will upgrade to DDR3 later, but my current memory is holding up fine for now.