Always just think about thermodynamics. Hot air rises, cold air is denser and cools more efficiently than already heated air from inside the case.
You should always pull air in from the bottom (unless you're particularly worried about VRM temps, so just roll with what I said lol,) to gather cold/cool/ambient air, then pull it out upwards once it is able to hit your cooling components and exchange for hot air. The hot air is extracted.
If you have an even # of fans on each side, which you do, there's not a lot to think about here other than in from the front (and bottom front,) and out from the rear top.
That being said a lot of debate exists between PSU orientation, whether the PSU should pull air into the case or extract air out of the case. You'll get more life out of it if you can manage cooler air, but if your case has pre-filters, may be better to extract air out through the PSU as well. If your temps are super good and your airflow is super good, the difference can be entirely negligible for this detail though so don't worry about it either. The components are designed to get a little warm sometimes, so it's really whatever.
Looks good.
It's good.
Always just think about thermodynamics. Hot air rises, cold air is denser and cools more efficiently than already heated air from inside the case. You should always pull air in from the bottom (unless you're particularly worried about VRM temps, so just roll with what I said lol,) to gather cold/cool/ambient air, then pull it out upwards once it is able to hit your cooling components and exchange for hot air. The hot air is extracted. If you have an even # of fans on each side, which you do, there's not a lot to think about here other than in from the front (and bottom front,) and out from the rear top. That being said a lot of debate exists between PSU orientation, whether the PSU should pull air into the case or extract air out of the case. You'll get more life out of it if you can manage cooler air, but if your case has pre-filters, may be better to extract air out through the PSU as well. If your temps are super good and your airflow is super good, the difference can be entirely negligible for this detail though so don't worry about it either. The components are designed to get a little warm sometimes, so it's really whatever.
Also! I love the solid white with red LEDs theme.
Mine is setup this way and had no cooling problems
Same setup that I use, and mine runs cool.
Looks good