Ok, I've ordered the Maximus VII Impact, an i5-4690K, and a 500GB Samsung 850 EVO, which for the next several hours includes a free 128GB USB3.0 thumb drive.
Edit: Future upgrades will include a 2x8GB RAM kit and a similar-sized M2 SSD, and possibly a miniITX case. It needs to fit the Asus Strix GTX970, which is a huge card.