I think you are right. i will switch from I7 to I5 in this case,
But the ram you suggested is not listed under the motherboard QVL and also sandy bridge only supports ram up to 1333MHZ. is it going to be a problem ?
Motherboards have nothing to do with the gaming performance. The Z68 is made up of the H67 motherboard and the P67 motherboard, the Z68 has the ability to work better with an SSD if you are going to get one down the line.
But in the end both motherboards are good no real big difference beside the SSD cache of the Z68.
I looked over the motherboard QVL and sandy bridge. They only support up to 1333mhz ram. Will the mobo and sandy bridge have any problem running it ?
Also, what is modular form of PSU? (sorry, I am a big noob)
If you're going to wait, I suggest you don't finalize your build right now and ask 1 week before you buy all your CPU components. Tech changes so fast that a part that might be the best 3 months ago will not be the best right now.