For the amount of money you're spending on this machine, you should just build it yourself. It's not hard. Some people have called building computers "Adult Legos". If you're buying prebuilt, check out Origin PC and Alienware. They're both safer for your wallet. Best is to build it yourself.
If you want more information about choosing parts, you should check out this SA thread [http://forums.somethingawful.com/showthread.php?threadid=3525843].
ASRock Boards are fine, but I never had the pleasure of dealing with their customer service. No, SSDs do not possess any Read endurance, but it does have Write Endurance. Nontheless, a decent SSD will last for quite a bit. You don't need a i7 4770K for gaming. AnandTech [http://anandtech.com/show/7189/choosing-a-gaming-cpu-september-2013] and TechPowerUp [http://www.techpowerup.com/reviews/Intel/Core_i5_4670K_and_i7_4770K_Comparison/8.html] has some more information, but suffice to say, the performance difference between an i5 and i7 (for games) is not worth the price difference.
Your display is important, and it'll be the deciding factor of what graphics card you need. So, are you going to be gaming at 1080p or 1440p? High refresh rates?
edit: Also, Windows 8.x is not bad or inferior to Windows 7. You can skip 99% of the new Metro UI if you want. Under the hood, it is a bit better, and it does provide a small performance boost in at least one game [http://hardocp.com/article/2013/11/24/battlefield_4_windows_7_vs_81_performance_review#.UppWzBQhbIU].
If you want more information about choosing parts, you should check out this SA thread [http://forums.somethingawful.com/showthread.php?threadid=3525843].
ASRock Boards are fine, but I never had the pleasure of dealing with their customer service. No, SSDs do not possess any Read endurance, but it does have Write Endurance. Nontheless, a decent SSD will last for quite a bit. You don't need a i7 4770K for gaming. AnandTech [http://anandtech.com/show/7189/choosing-a-gaming-cpu-september-2013] and TechPowerUp [http://www.techpowerup.com/reviews/Intel/Core_i5_4670K_and_i7_4770K_Comparison/8.html] has some more information, but suffice to say, the performance difference between an i5 and i7 (for games) is not worth the price difference.
Your display is important, and it'll be the deciding factor of what graphics card you need. So, are you going to be gaming at 1080p or 1440p? High refresh rates?
edit: Also, Windows 8.x is not bad or inferior to Windows 7. You can skip 99% of the new Metro UI if you want. Under the hood, it is a bit better, and it does provide a small performance boost in at least one game [http://hardocp.com/article/2013/11/24/battlefield_4_windows_7_vs_81_performance_review#.UppWzBQhbIU].