Need best performing (Win) laptop model for Interior design

[forinforom]

Plz suggest best performing (Windows) laptop model options to buy in India (upto 70-80k) : for CAD, 3D, SKP modelling, rendering, Photoshop, Corel, powerpoint Presentations, Graphics (basically interior design & creative works) etc.,
I also run multiple programs at once. KINDLY SUGGEST THE BEST within the BUDGET. Thanks in adv. (Laptop with International / Global Warranty)

Budget : upto INR 70-80k

Looking for best configuration or below-mentioned

• 
  Screen : 14" / 15" (Please also specify required screen details as well)
  Processor : i7 Quad core
  Storage : 1 TB HDD
  RAM : 8GB - 16GB (possibly expandable upto 16 or 32)
  Graphics : 2GB / 4 GB (best for CAD, 3D, SKP modelling, rendering, Photoshop, Corel, Graphics (basically creative works) )etc.,
  Battery : min 6 hrs
  Weight : needs to be portable thus whatever available in minimum weight (but avoid full SSD storage)
  Misc : Backlight keyboard (blue-ray if possible), apart from usual ports & slots etc.,

 

[forinforom]

some Stuff that I liked while checking online but seemed beyond budget, were:

Asus Rog GL552JX-CN009H
Asus Rog G551JX-DM036H
Acer Aspire Nitro VN7-591G-74X2
Acer Aspire Nitro VN7-591G-73Y5
DELL PRECISION M3800
LENOVO THINKPAD® W541 / W540

some stuff seemed within budget & sumwhat close to needs (when chkd offline) :
(couldn't find any quad core in my budget here though)

DELL Inspiron 15 5548 (Silver; 2.6 kg; hours?) : approx. INR 72k
Intel RealSense 3D Camera Front F200, Touchpad ;
15.6"FHD backlit Touch(1920x1080); i7-5500U (4 MB cache, 2.4 GHz with Turbo Boost Upto 3 GHz); 1TB HDD (5400RPM); 8 GB DDR3; AMD Radeon HD R7 M270 4GB DDR3 ; 3 Cell Battery
Flipkart Link

DELL Inspiron 15 5558 (Black Gloss; 2.4 kg; upto 7 hrs) : approx INR 75k
15.6"FHD Backlit Anti-Glare (1920x1080); i7-5500U (4M Cache, 2.4 GHz with Turbo Boost up to 3.0 GHz); 2TB HDD (5400RPM); 16 GB DDR3 (1600 MHz); NVIDIA® GeForce® 920M 4GB DDR3; 4 cells smart Li-ion (40 WHr or 47 Whr);
Flipkart Link2

DELL Inspiron 15 7548 (Silver; 2.2 kg; hours?) : approx. INR 86-90k No optical drive
15.6" FHD backlit IPS Touch 1920 x 1080; i7-5500U (4M Cache, up to 3.00 GHz); 1 TB (5400RPM); 16GB DDR3L (1600Mhz); 4GB DDR3 AMD Radeon™ R7 M270; 3 Lithium ION Cells
Flipkart Link3

LENOVO Z51-70 (80K60002IN) (Black; 2.3 kg; Upto 6 hrs) : approx. INR 65-68k
15.6" FHD TN Anti-Glare; i7-5500U (4M Cache, 2.4 GHz with Turbo Boost up to 3.0 GHz); 1 TB HDD + 8GB SSD ; 8 GB DDR3 (1600 MHz); 4 GB DDR3 AMD TROPO XT2; 4 cell battery;
Flipkart Link4

Plz do re cross-chk these specs ...& possibly do suggest better performer in terms of work than in games ...Let me also know if you have any quad core options in mind as per mentioned budget. Thanks Thanks Thanks in advance!!!