Intel Core i7 6700 - RM 1242
Gigabyte H110M-DS2 (D4) - RM 289
Corsair 16GB (8GB x 2) DDR4 2133MHz Value RAM - RM 266
Zotac GTX750Ti 2GB GDDR5 Single Fan - RM 489
FSP Hexa+ 400W - RM 145
Bitfenix Nova - RM 149
Total: RM 2580 (ETech price inclusive of GST)
You can do the following to keep below 2.5k:
1. Remove the dedicated GPU if you don't mind to run those games listed with low/medium settings at 1080p60, the iGPU (Intel HD 530) is able to do that.
2. Remove the other 8GB RAM for the time being (not recommended as more memory do benefit video editing/rendering).
If you can accept the extra RM 80 then you can consider sticking to this build.
Windows 10 will be installed for free by ETech (as reported by forumers here).
Another casing option would be Tecware Alpha (RM 199), it comes with 2 front intake fans which can improve the airflow of the rig.
Thanks for the detailed suggestions, do you have any idea when the next gen Intel Proc & Nvdia GPUs will hitting our shores? If it's this year I can wait.