i dont know if i would right now invest into GPU mining, the new AMD Cards are just ringing at the door and for sure this will influence the market as a whole ...
so if GPU i would really relax a bit and wait at least until mid of the month.
With the current FE edition vega in account and the gaming vega edition will not be a game changer, and the requirements to pay extra to get discounts on a package will not be helpful. 1080 TI at a similar price point of the higher Vega is still better, and Nvidia has the 20 series cards release for late 2017 early 2018 will be far better in the end at better pricing.