CPU: Intel Core I7 7700K
Cooler: Cryorig H7 Cooler
MOBO: Gigabyte Z270X Gaming 7
RAM: GSKill RipjawsV RED 2x8GB DD4 2800mhz
PSU: FSP Hydro G 650W 80+ Gold PSU
Case: Phanteks P400S Glass Gray
SSD: Samsung 850 EVO 250GB SSD
Total RM5079

References from IdealTech. You can retain your GPU , PSU , SSD and HDD as stated. But hey, it's good to get a new one since you suggested. 
CPU: Intel Core I5 7600K
Cooler: Cryorig A40 Liquid Cooling
MOBO: ASUS ROG STRIX Z270F Gaming
RAM: GSKill RipjawsV RED 2x8GB DDR4 2800mhz
GPU: Gigabyte GTX1070 Xtreme Gaming 8GB DDR5
PSU: FSP Hydro G 650W 80+ Gold PSU
Case: IN-WIN 303 Black
SSD: Samsung 850 EVO 120GB SSD
HDD: WD 1TB Caviar Blue HDD
OS: Microsoft Windows 10 Home 64Bit
WIFI: Tplink TL-WDN4800 Dual Band PCI-E
Others: RGB LED STRIP
Total RM7069

Refer to IdealTech (Google) or etc... Better check the place where you build your PC too. Some of these specs do not include LCD so might need to order or use your old one.

Samsung SSD is not cheap, 500GB 850 EVO will cost you 800+ while 950 EVO 512GB is more than 1.5k 

Intel Core i7 7700 - RM 1403
Gigabyte H270-HD3 - RM 515
G.SKill Aegis 8GB DDR4 2400MHz RAM - RM 275
Samsung 850 EVO 500GB SSD - RM 820

Total: RM 3013 (ETECH price inclusive of GST)

Case that you may consider or take a look:
Phanteks Eclipse P400/P400S/Evolv Pro M
NZXT S340/S340 Elite
Fractal Design Define R5
CM MasterCase 5
Intel Core i7 7700 - RM 1403
Gigabyte H270-HD3 - RM 515
G.SKill Aegis 16GB (8GB x 2) DDR4 2400MHz RAM - RM 550
Gigabyte GTX1070 8GB GDRR5 G1 Gaming - RM 2168
Kingston SSDNow UV400 240GB SSD - RM 375
WD Blue 1TB HDD - RM 219
EVGA SuperNova 550 G2 - RM 459
Tecware Alpha - RM 229
BenQ Zowie XL2411 - RM 1175

Total: RM 7093 (ETECH price inclusive of GST)

RAM - 8GB is enough but will run of out memory in no time if you don't practice memory management at all, i.e. few Chrome/FF tabs can take away half of your available memory already, 16GB is recommended for this case (not mandatory though as Windows will remove inactive apps from the memory if it is not enough or use virtual memory).

PSU - I have no idea why they always push that PSU model to their customer, RM 349 for a non-modular and unknown internal component quality (barely got any review online), why take the risk? Superflower Leadex Silver is obviously a better choice here within the same price range. And yes I do recommend you to top up your budget a bit for a better PSU in this case.

RAM - 8GB is enough but will run of out memory in no time if you don't practice memory management at all, i.e. few Chrome/FF tabs can take away half of your available memory already, 16GB is recommended for this case (not mandatory though as Windows will remove inactive apps from the memory if it is not enough or use virtual memory).

PSU - I have no idea why they always push that PSU model to their customer, RM 349 for a non-modular and unknown internal component quality (barely got any review online), why take the risk? Superflower Leadex Silver is obviously a better choice here within the same price range. And yes I do recommend you to top up your budget a bit for a better PSU in this case.

Techview posted the picture of BenQ Zowie XL2411 two weeks ago on their FB page, not sure if it is sold out or not, if you haven't asked them then you can try to PM them.

Check this out:

https://forum.lowyat.net/topic/4054489/all

No pivot support is a big let down for me