ryzen R5 1600                  RM1020.00 / R7 1700 RM1599.00

(More core, better cpu power for editing workloads etc, especially in rendering time. But more core, more power consumption, may result vrm more heat if OC heavy)

any B350 mobo                 RM 450.00

(Quality of mobo, Gigabyte (4+3 with onsemi) > Asus (4+2 with onsemi) > Biostar (4+3 with sinosem) > MSI (4+2 with nicosem) > ASROCK (3+3 with nicosem, commonly better VRM give u better temp and stability when OC under high volt, still not recommended for OC 24/7 under 1.4v with ryzen 7 + B350 mobo, commonly give u about 100'c on vrm, got possibility toast ur mobo after long time run.)

DDR 4 8gbx2                     RM  650.00

(There's are cheaper 2133mhz DDR4 as low as RM140/8gb stick, but u need check is it in QVL of mobo u choose to better run will with ur mobo. RM650 is 3000/3200mhz 8dbx2 kit that commonlay well run in any am4 mobo)

Samsung 850 evo 250gb    RM 450.00

MSI/Sapphire RX570 4gb  RM  975.00 / zotac gtx 1060 3gb mini RM 910.00

(RX 470 4gb give u more gaming guarantee with benefit of 4gb vram, becoz big title may consume more than 3gb. Still, as goldfries stated, NVIDIA cuda benefit you at Mercury playback, or get u self a used gtx1060 6gb with RM850 because this few month there are few ppl sell their gtx1060 6gb in this price, just take time to wait them )

leadex ii gold 650W psu    RM  480.00 / Leadex Silver 550W - RM 360.00

(Tier 1 and tier 2 PSU different component, different PSU quality, not said the tier 2 psu is bad. just 1 cent more get you quality, more RM120 more space for future upgrade,better power supply,better secure better hardware lifespan in theory.)

nzxt s340                        RM  340.00

Try asking idealtech, dotatech, topmaid, etechpc etc for a quote, if not wrongly there r at least RM100 discount when u buy ryzen+mobo+ram maybe more with full rig?

Vega is at least GTX 1080 level. Won't replace RX 570 and 580.