Home PC $800 limit

If you are gaming the graphics card will not do

If you are not gaming then just drop the graphics card all together and use the graphics built in to the processor

Either way the mb is probably overkill . You could use an $80 mb with an H77 chipset , and an i5 3470 and have plenty of performance

Additional case fans are optional . It wont run hot . You'd be better off spending more on a more robust case with an aluminum front panel IMO

And the power supply will not do
In its current form a good quality 350 watt psu could run that computer . But the sparkle is useful as a doorstop and not much else . The corsair CX 430 is an 80+ bronze rated psuUsually well priced at Newegg