*Motherboard should most definitely be Z77(So you get out of the box compatibility with Ivy Bridge) This is a good solid Gigabyte board ; This Biostar is also getting great reviews too! Also depends on what you want out of your motherboard too, SLI/CFX? Extra features?
*PSU, any good 700-850W should be fine, Single 12+ Rail with atleast 52+ Amp (Like this model, I have the GS700 series in a system, Great solid PSU)
*Ram - Corsair DDR3 1600. Seems about what everyone is running smoothly and cool.
*Case - I am partial to Mid-towers, I like the Rosewill Challenger case (it fits everything perfectly, with great airflow) although a lot of people like the Corsair D series cases, very easy cable management and air flow)