Thanks for all your suggestions.
The notebook has i7 4710 HQ, 8 GB RAM, HYBRID 1TB 5400RPM SSHD(8G),N15P-GX GDDR5 4G
It comes with Win8.1,will make another 2 different partitions one for kali and third one for ubuntu/distro/etc(i would regularly format the 3rd partition to try out and learn new things)
As far as wireless card is concerned it can have either Realtek rtl8723be Or Qualcomm Atheros AR956x,as inquired,Lenovo is distributing anyone on the same model so can have either of the two,though not very much sure on how well are their performance,still digging out.
I appreciate all your efforts here.