The Phanteks Enthoo series cases were designed with liquid cooling in mind. Ventilation and airflow are excellent so the cases are okay for an air cooled system too. All three Enthoo cases are large cases that can easily accommodate a GTX 970 and the Noctua NH-D15 cpu heatsink.
I would recommend the Enthoo Luxe over the Pro. The Luxe model is taller than the Pro. There is extra room in the top panel allowing the installation of a liquid cooling radiator with fans in a push / pull configuration without interfering with the motherboard. It might come in handy in the future.
If you go to youtube.com and search for Enthoo Pro or Enthoo Luxe you will find a lot of video reviews and custom liquid cooling videos. Hardware Canucks probably...