As you wanted to take upgrade ability into account I have made a few changes.
Single 8gb dimm in order to move to 2x8gb down the line
SSD as its only a few $ more than the hdd and will have significant quality of life benefit.
Larger psu to give future power headroom for cpu and gpu upgrades
there is also the pro4 version of the asrock mobo that has 4 dimms and better cpu power delivery as well for ~$16 more
PCPartPicker Part List
Type
Item
Price
CPU
AMD Ryzen 3 3200G 3.6 GHz Quad-Core Processor
$124.25 @ shopRBC
Motherboard
ASRock B450M-HDV R4.0 Micro ATX AM4 Motherboard
$66.24 @ Vuugo
Memory
G.Skill NT Series 8 GB (1 x 8 GB) DDR4-2133 Memory
$44.99 @ Newegg Canada
Storage
Intel 660p Series 512 GB M.2-2280 NVME Solid State Drive
$74.99 @ Amazon Canada
Case
Thermaltake Versa H15 MicroATX Mid Tower Case
$44.99 @ Memory Express
Power Supply
Corsair CXM 650 W 80+ Bronze Certified Semi-modular ATX Power Supply
$69.99 @ Canada Computers
Prices include shipping, taxes, rebates, and discounts
Total (before mail-in rebates)
$470.45
Mail-in rebates
-$45.00
Total
$425.45
Generated by PCPartPicker 2019-08-24 22:48 EDT-0400