Is a new monitor required?

Intel Core i3 6098P - RM 432
Asus H110M-K - RM 273
Corsair 8GB DDR4 2133MHz Value RAM - RM 133
Zotac GTX750Ti 2GB GDDR5 Single Fan - RM 489
FSP Hexa+ 450W - RM 166
Tecware Alpha - RM 189

Total: RM 1682 (ETech price inclusive of GST)

You can add a 120GB SSD to speed up the booting time and have a much responsive system if you wish since you still have some budget left.

It depends on your usage, gaming resolution and the settings you aim to play.

The cheapest combo (lowest end i5 + cheapest GTX1070, 8GB RAM, no SSD, no OS included) requires at least 3.5k+.

If you want a decent one with i7 CPU to prevent any sort of bottlenecking then you gonna prepare at least 4k+.

For a complete rig with 120GB/240GB SSD, decent mobo & PSU & case, 16GB RAM etc, you need to have at least 5k+.

GTX1070 is Titan X/980Ti's level, while GTX1060 is said to have GTX980's performance (according to Nvidia, please wait for review next week)

If you are gaming on 1080p60 and can accept almost max settings (80% of the graphics settings turned on), then GTX1060 should be enough.

GTX1070 focuses more on 1440p60 gaming, but if you are running a 1080p 144Hz monitor then GTX1070 is just barely "enough" to push those high frame rates on 1080p unless you own a GSync monitor at which the frame rate doesn't really matter in this case due to the support of variable frame rate from GSync module.