Also I got an extended warranty (2 years) on the mobo which is already 3 years and the cpu cooler which is 1 year (I got an extension of another year). Should I get an extended warranty, I was thinking I could upgrade the hardware 3 years later. Do I need one for the cpu cooler because I still get the stock cooler. Should I get one on the mobo? Will it still be compatible 3 years later or should I get a new one? Also should I stick with this case since I'm not getting an EATX mobo, but I heard that a full tower offers lots of room for upgrades. You can give me another link, I was thinking of the CM690 II Advanced case as a backup though.
PSU + CPU Combo - No on the PSU, and no on the 2600k.
CPU - The 2500k will overclock and game the same as the 2600k. Games won't take advantage of the hyperthreading on the 2600k (the only real difference between the two CPUs). If you are doing video encoding, Adobe work, or other similar work then the 2600k might be for you.
i5-2500k => http://www.newegg.com/Product/Product.aspx?Item=N82E168...
The motherboard is almost the same as the more expensive one and $80 cheaper , the power supply is only a little cheaper but is not a combo and the cpu and psu together save you $90 over the combo you had selected. Unless you are going with two or three video cards you don't need 1050w psu. But of course the option is yours to go with what you choose and these recomendations are only to let you know that there are less expensive options incase you want to save some money.
For the CPU I'm considering it, but I want a cpu that is future proof in case games in the future might utlize the hyper threading and in three years I'll almost be in college and since I'm interested in computers, I might consider things that require heavy processing. I will most likely be using dual gpu's though so still thinking about the psu and for the mobo, what differences can you make between this and the P8Z68-v pro.
What you are paying the extra money for is the ability to switch between the intergrated graphics and discrete graphics , also there are 4 sata3 ports vs 2 on the cheaper board. If you think those features are worth $80 then by all means buy the board you listed. As far as the cpu goes in three years you will be wanting a new cpu and not be wanting to be still using a three year old cpu , the cpu's that will be available then will be so much more powerful that you will want one of those.