Here's what I suggest to you.
Firstly don't buy a Cooler Master PSU, they're not very good. For a system like his a Corsair CX 500 or a CX 600 would be fine, or something like an Antec Neo 520W. Anything from Corsair, XFX, Seasonic, Antec, OCZ or PC P&C would be fine.
I'd go for an i5 3570K processor and also get a Cooler Master Hyper 212+ to go along with it and then overclock the 3570K to beyond 4.0GHz, maybe 4.2GHz. Z68 is the previous generation chipset now, go for Z77. Something like this would be good if you want future-proofing
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128544&Tpk=ga-z77x-ud3h (there are cheaper alternatives too). The board and CPU both support integrated Intel HD 4000 graphics, which are fine.
8GB of RAM sounds good, go for DDR3 1600MHz and get 2x4GB DIMMs in case you want to drop another 8GBs in the future and get 16 - this is the RAM I use
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231428 but bear in mind if you're going to be using aftermarket cooling then those full height DIMMs may not fit underneath the cooler, so this would be a good alternative and fit easily underneath the cooler
http://www.newegg.com/Product/Product.aspx?Item=N82E16820233186
Get two of these fast 7200 RPM 1TB disks for your data and backup drives
http://www.newegg.com/Product/Product.aspx?Item=N82E16822148840 and this SSD
http://www.newegg.com/Product/Product.aspx?Item=N82E16820171567&Tpk=sandisk extreme 120gb - take it from that this SSD is very fast. It's faster than the Crucial M4 and the Corsair Force 3 drives. I own a Crucual M4 myself, but Dad has this SanDisk drive and it is quick!
You may want to invest in a dedicated graphics card if you're doing Photoshop. You've got an 800 buck budget so I reckon you can squeeze one in, even if it's relatively low end. See if you can get this card in your budget
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150560 but if it's too expensive for you, again, there are cheaper alternatives out there.