Intel Core i5 6400 - RM 809
MSI B150M Bazooka D4 - RM 409
Kingston HyperX Fury 8GB DDR4 2400MHz RAM - RM 289
Gainward GTX960 2GB GDDR5 Reference - RM 799
Kingston HyperX Fury 120GB SSD - RM 229
WD Blue 1TB HDD - RM 225
FSP Hexa+ 550W - RM 189
Thermaltake Versa H25 - RM 139
AOC I2360SD IPS - RM 499

Total: RM 3587 (Techview price inclusive of GST)

Downgrade the monitor to smaller size to keep < 3.5k.

Easily max setting at over 100 FPS with GTX960 for Dota 2.

As for other games, it depends on the game optimization from the developers. Based on the current market trend, GTX960 is able to run most of the games at med to high settings (1080p).

Cooling is fine too, locked i5 with stock cooler should've no temperature issue, you can get few casing fans if you are not satisfied with the temperature. Please note that the GPU is using single blower fan cooling which is slightly higher in temperature when operating compared to non blower type cooler.

Standard Win 10 installation takes only 25GB (+ all windows update).

You can check my yesterday's post here for more information on the cooler.