Just an update:
Thanks to all the sifus here for the advise given. After much consideration, I've already gone ahead and purchased my rig (used for 70% gaming and 30% premiere pro vid editing) with Dotatech (compared with IdealTech, CZone, Viewnet. Due to stock availability and a slightly cheaper price for the parts overall, I've decided on Dotatech). Anyway my final build is:
Ryzen 3900x
X570 Aorus Pro Wifi
Coolermaster Masterliquid ML360R
8gb x2 Trident Z Neo RAM
Gigabyte RTX2080 super Aorus
XPG SX8200 1 TB
1TB HDD
Case Lian Li PC-011 Dynamic White
PSU Corsair 850W
Thanks again for all your help! I'll be collecting my rig tomorrow already
Advise needed: Gaming PC budget of RM10k