Clearly you don't know well about parts, my friend
1-The motherboard brand (Gigabyte) is NO.1 nowadays and it's known with high-quality components (UNlike Asrock for example, with Asus MOBO's nowadays has many faults{ turning up warped, nitpicking with ram, double reboot/ reboot at bios, higher power consumption...etc} and repeatedly returned for refunds ) .
If overclocking is the purpose, ASUS is the one,Their boards usually use less Vcore to OC and it was used for AMD FX-8150's world record breaking overclock, multiple times.
Gigabyte mobos are usually stable, offers good SLI/CFX better than Asus. So it's the best choice in this area.
Asrock is basically Asus subsidiary. Being more towards budget, And it's generally hit-or-miss purchase .
2- Seasonic also is TOP BRAND (can stress it enough) PSU with more wattage than recommended by Nvidia & AMD websites for their cards (being GTX 650 ti boost and HD 7850 right here, respectively).
3- FX-8350 might be at the moment an overkill, but when technology advances and games get more demanding in the future it will be great for the task.
If the OP wants to get GTX 650 ti boost, then by all means he should.
It's definitely more powerful than 7850 and when SLI you reach and sometimes surpasses the GTX 680 and HD 7970 levels.
Keep in mind -though- that you should get good cooling system because 650 ti boost works @high temps sometimes.
Best luck
