Greetings From Canada

So I think I'm just going to build a PC, the business class machines just aren't giving me the options I want. (and I just like to build systems)

This is what I'm looking at:
i7 9700 (k)
ASRock B365M PRO4
32GB DDR4 RAM
WD Black SSD for Boot
WD Purple 6TB
StarTech.com HSB3SATSASBA 3 Bay Aluminum Trayless Hot Swap Mobile Rack Backplane
Silverstone ST45SF-G 450W SFX 80 Plus Gold
iStarUSA D-214-MATX 2U Compact MicroATX Rackmount Chassis

Any suggestions for additions?

I finally got it built and working!!

This is the final setup:

Intel i7 8700k
ASRock B365M PRO4
16GB DDR4 RAM
WD Black SSD for Boot
WD Purple 6TB x2
StarTech.com HSB3SATSASBA 3 Bay Aluminum Trayless Hot Swap Mobile Rack Backplane
Seasonic Focus PX-550
iStarUSA D-214-MATX 2U Compact MicroATX Rackmount Chassis

Windows 10 Installed. Need to harden/secure/debloat