The PSU is poor quality, don't use it for a new build, get a good 500W+ PSU from Antec/ EVGA/ XFX/ SeaSonic, XFX pro 550W or EVGA 600B or SeaSonic 520W S12II are good options, if available in your region.
The HDD would work, its SATA 3Gb/s and SATA ports are backwards compatible.
Also, you can't SLI on a 970 MoBo, you'll need 990FX for that, and secondly, the mentioned PSUs will not have enough wattage to support SLI, you'd need a 750W one.