I just bought this pc mid Dec. Will keep monitoring the temp first and if still in that range, will get it done at nearest PC shop. Tq for you suggestion bro. 
Understood. I am using Tecware Infinity M2 case. Here is the picture.
A better cooler is needed indeed. 
I got these in my list as per others suggestion as well:

Tq for you suggestion bro. 
My current case fan is the one come with Tecware Infinity M2 case. Probably will get those Artic Cooling fans too. Thank you for the suggestion bro. Appreciate it. 

Hi all. Finally, I managed to get these installed after 1 month+

+ Thermalright Aqua Elite 240 AIO
+ ARCTIC  P12 SlimPWM PST x 2 unit
+ ARCTIC MX-6T hermalpaste

Below is the comparison during playing Crysis3.

Temperature Before: 

Temperature After:

For the current setup, is that temperature range normal ?

And if anyone wonder, this is my current pc look like:  
By the way, I would to thank all sifu/seniors for all the recommendations and suggestions provided.  

I really appreciate it. TQVM & you guys are awesome. 

I did run MSI Afterburner when playing game. Here is the result:
CPU:
GPU:

Should be okay within that temperature range?
I did run MSI Afterburner when playing game. Here is the result:
CPU:
GPU:
I can notice a significant drop in comparison to the previous setup. 
I guess I should not worry about the temperature now.