The Corsair Obsidian 700D is an amazing case for water cooling, but a bad case for air cooling. Moreover, It's overpriced. On the other hand, the PSUs from Corsair are very good units.
The COOLER MASTER ATSC 840 is a fantastic case that you can use for water cooling or air cooling. However, I wouldn't recommend you to buy a Cooler Master PSU (with the exception of the 500W and 600W PSUs from the Silent Pro M series, both made by Enhanced Electronics).
I would go for this combo:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129063
The Antec 1200 is a high quality full tower and the Antec Truepower New 750 is an amazing PSU. This combo is going to be almost impossible to beat on.
Here you have a video review of the case (only) :
http://www.youtube.com/watch?v=0j3MNAQLuIQ
The ANTEC TRUEPOWER NEW 750 is an exceptional PSU which has been made by Seasonic. All capacitors on this unit are Japoneses by Chemi-com. It has an excellent efficiency across a broad range of loads (80-Plus Bronze certified), very good voltage regulation (voltages very close to their nominal values) and excellent ripple and noise supression on its outputs.
This PSU presents a combined +12V rating of 62A (744W), which is divided up into four 25A +12V rails (over current protected). Being modular, it supports even two very high-end video cards that require two power connectors each due to the two 6-pin and another two (6+2)-pin PCIe connectors.
It's a monster. You even could reach 920W at below 50ºC.
It has 5 years warranty.