Hey guys I’m planning on making my first gaming machine from the ground up: I’ve modified my current computer a couple times, but it was nothing more than part swapping.
My budget is around $800 and I plan to use this build mainly for gaming and Photo Editing
CoolerMaster PSUs aren't great though. That same case without the PSU is only $20 less, so that ought to give a clue. The case is definitely worthwhile; it's what I have and I really like it.
This OCZ StealthXStream OCZ600SXS 600W ATX12V / EPS12V Power Supply 100 - 240 V CB, CE, CSA, UL, FCC - Retail...is only $45 after MIR: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
The problem with cheap PSUs is they often don't like to die alone. You're taking a big risk with your system.
As nice as the CM-690 case is, you'd be better served by getting a $30-$40 case (as long as it will take front and rear fans) and spending more on a decent PSU.