[SOLVED] Going to buy a pc, newb/need help!

[rsvpcode101]

Current Specs:
mastercase h500
Ryzen 5 2600X
x470 gaming plus
EVGA 500 B1
Silicon Power 512gb SSD
corsair vengeance lpx 2x 8gb 3200mHz
XFX rx580

I want to know if these components are decent? I picked them out and did some research and so far I think they are okay, but i would want to look into a better case. The mastercase h500 is kindof expensive and im not sure about it's airflow quality. This is more of a budget build, and budget is $800-$900. Also I want to look for a nice monitor and keyboard, basically a whole gaming rig for under $1000.

Any tips or cases would be really helpful, thanks and I hope this build ends up insane!

 

[tennis2]

Ryzen 2600X = $200
Gigabyte B450M = $90 (not on sale)
2x8GB DDR4-3000 = $90
Crucial MX500 500GB SSD = $55 w/ promo code EMCTUVY22 (ends at 11pm on 1/30) good price
RX580 8GB + 2 Free Games = $190 w/ promo code EMCTUVE25 (not a fantastic price)
Corsair RMx 550W = $60
Phanteks Evolv = $85 or Phanteks Eclips = $50
Subtotal = $740-$770

A "nice" monitor (120-144Hz FreeSync) is going to cost you around $200-$250 for 1080p.
Keyboard cost will vary depending on if you want mechanical switches or not (mechanical could cost $80-$100)
Mouse also varies, but you can get good ones for $30.