So you got 4GB x 3 DDR4 RAM to reuse and the build list doesn't have to include any new RAM quotation right? (I assume yes)
Intel Core i7 6700 - RM 1399
Gigabyte B150M-D3H (D4) - RM 379
Kingston 12GB (4GB x 3) DDR4 <unknown speed> RAM - reuseGigabyte GTX1060 6GB GDDR5 Windforce - RM 1319
Kingston SSDNow UV400 240GB SSD - RM 315
Seagate Barracuda 1TB HDD - RM 205
EVGA Supernova 550 G2 - RM 459
Tecware Alpha - RM 229
Total: RM 4305 (ETech price inclusive of GST)
GTX1070 is possible if you downgrade the PSU. If your DDR4 RAM is > 2133MHz (i.e. 2400MHz), it will be automatically downclocked to 2133MHz due to chipset limitation.