very good, the motherboard is gen3 but since you are not using ivy bridge pci-e 3.0 will not be active, but since you are using 560 ti, no problemo.
Awesome build, just make sure the psu is good enough to feed both cards;
you will be running SLI at x8 but the performance lost is minimum 2~4% if i'm not mistaken.
about the cpu, no problems with bottleneck, this cpu is very good, perfect for gaming and also very easy for overclock if you need it;