Congratulations ... excellent PC
Yes, it could have better/more precise components as several member said ... but tension not ...
You bought it for gaming and it will serve you very well for significant time period, no difference in gaming since 1st gen. of i7 920 (with minor ocing)
Skylake has notthing to do with gaming, some features like M.2 32 GB or USB 3.1 which can be ignored for now ...
wesy bhi skylake ki life konsi koi 5 year honi hy, 6 month nahi guren ge to next gen. ke reviews wagera leak hona shuru ho jain ge
So enjoy gaming