That's a good choice.
BUT, you still should choose your video card first. And then confirm that the XFX has the necessary cable connections to match the video card.
And I'd measure your existing power supply and compare those measurements to the measurements shown on the "details" tab for the XFX power supply at Newegg. It's nearly certain the XFX will fit your case, but I would still compare to be sure.
The XFX is NOT a "modular" power supply, which means it will probably have several cables connected to it that you will not use. If you got a "modular" power supply, you would be able to disconnect unnecessary cables, which would make for a neater installation. But it's not a big deal.
Is your case more than 18 inches tall?