I am looking for something similar and I am waiting for the 10 series GPU to really come out for laptops, mainly 1050 and 1040 GPUs for laptops.
I imagine for myself a dual core i7 with a gtx 1040, it will play games reliably on medium, while at the same time having very good battery for regular use, and will probably be light. So far it's just my imagination, we'll see how they look like in a few month when they come out.
If you are looking for something similar maybe wait.
Edit: something like this is what I am waiting for
http://www.mobiletechreview.com/ubbthreads/showflat.php?Number=49767