Yes, but with some sacrifices

Core i5-6402P - 790
Gigabyte B150M-HD3 - 379
Corsair 8GB DDR4-2133 - 239
Gigabyte GTX 1060 6GB DDR5 - 1329
Transcend 220S 240GB SSD - 289 (from All IT Hypermarket)
Corsair VS or FSP Hexa+ 550W power supply - 199 (Viewnet)
Thermaltake Versa (pick your model) case - 169 (Jayacom)
Acer R241Y monitor - 649

RM4043 total (Mostly C-Zone prices)

No decrease, Kaby Lake is slightly expensive here.
For installment? If only for normal purchase, then I am pretty sure most of the shop do accept it if they accept credit card as payment option.

Dota 2 is more on single core performance, just like CS:GO, so a highly clocked i3 will most likely to provide a better frame rate than i5, i.e. i3 7100's 3.9GHz vs i5 7400's 3.5GHz.

GTX750Ti might not be enough for now, I have seen quite a number of reports stating that the recent 7.00 update has brought up the requirements to get a stable 60 FPS, go for GTX1050 just to be safe.

Intel Core i3 6098P - RM 480
Asus H110M-K - RM 259
G.SKill Aegis 8GB DDR4 2133MHz RAM - RM 255
Palit GTX1050 2GB GDDR5 StormX - RM 565
WD Blue 1TB HDD - RM 219
FSP Hexa+ 450W - RM 169
Tecware F3 - RM 125

Total: RM 2072 (ETECH price inclusive of GST)

Skylake is slightly cheaper than Kaby Lake.

Size of the monitor is not the deciding factor, resolution is, so if the 24" monitor is a 1080p monitor then it will be fine.