You can't beat a good old-fashioned Desk-Top case for good ventilation and easy, instant, access...
I ALWAYS use them in each build... :)...!
Fozzers bit of desk-top kit.... ;)...>>>

Note: With this arrangement all the heat rises upwards, and
AWAY from each individual component....The heat doesn't
accumulate upwards, like it does in Tower Cases!!
...you know it makes sense...

...LOL...

...!
Paul...a bit of a
nut desktop case... 8-)...!
The lid has been removed for this photo, but normally kept on to ensure correct airflow through the case...front to back...

...!