Depends on what the computer is used for. If its gaming, then you won't use more than 4 gigs. If its for production editing, then you can use more, but only if you're loading up 3 big programs at the same time. Either way, with your assumed budget, the i5 is an option too. Might help if you take some time to edit your post and use the link in my sig for format.
Galaxy is an unknown PSU manufacturer to me. I'm going to say that's probably not the right choice. 1000w is overkill too. Even if you get a CF mobo, you won't use more than 750w with how efficient the 58xxs are. Look for antec, corsair, silverstone, seasonic.
If you want the option of CF, I'd look at the 790gx or a little more money in the 790FX. But whether you need to CF depends on the monitor resolution?