The 8xx chipsets don't really give you anything. The only thing you get is the ability to drop in a hexa-core CPU (which you don't need) without upgrading the BIOS (which isn't difficult and is free). Why pay more and not get anything for it?
Also, there are plenty of 8xx boards that aren't $230. Like the Gigabyte GA-890GPA-UD3H, Asus M4A89GTD Pro/USB3,Gigabyte GA-890XA-UD3, Asus M4A89GTD Pro, Gigabyte GA-890FXA-UD5, and several others.
EDIT: Forgot to mention that the X6 is definitely not needed for your uses. Een the 955 may be overkill depending on what you have to sacrifice to get it...