Be Quiet makes great PSU's.
Just ensure that it has sufficient 6/8-pin PCIe graphics connectors and you should be just fine. You probably need 2x6-pin which it likely has.
The Pure Power L8 model has:
2x6-pin, and
2x6/8-pin
So not even close to having issues. Even if you had an overclocked AMD CPU you'd be fine. My dad's total i5-4670K system uses 100Watts under full load without graphics card, and the GTX760 itself probably uses about 200Watts maximum.
So you might use no more than 300Watts total. Even if more you've got plenty in a 530Watts PSU.