Snowman, if you already have an AMD computer and want to turn it a hackintosh, go for it: will be both fun and frustrating.
But if you want to buy a computer for a hack, it's nonsense, since you can have affordable vanilla builds that will spare you lots of stress. Here's my "budget" recommendation:
GA-B75M-D3H (everything works wonderfully, but it's a simple board that doesn't allow for overclocking and doesn't have PCI-e x1, so if you need wi-fi or a dual ethernet card, you'll have to go with regular PCI and this demands some researching because of compatibility);
The board allows for up to 4 RAM sticks, so max it out;
Core I3-3225 CPU (because it has the HD 4000, meaning no graphics issues);
Any monitor with a DVI-D or HDMI port - VGA-only monitors will demand a discrete card and will increase the budget. Get the biggest screen you can afford.
The 5770 is okay, and the 2TB also will do (but you'll need workarounds for it to boot - personally i'd buy another smaller disk, 1TB or less, for the system: OSX doesn't like large volumes as startup disks).
All the best!