Must only be if you're selecting options which are either out of stock or on pre-order. As chopping and changing does not impact your place in the build queue.
The more fans you add, not matter how quiet they run, will still generate more noise.
The key is finding a good balance with the right case offering good airflow and the fans. Between the two cases, it'll probably come down to personal preference as both are good cases and are recommended by...
@Martinr36 would benefit from 32GB for MSFS2020. Also don't need Network card as MOBO has WiFi. Maybe drop PSU to 850 to fit within budget?
On iPhone so won't mess about with the configurator. PCS need an App! 🤣
I can't comment on the case or the MOBO.
Do you really need that much storage? I would choose the 500MB Samsung 980 and then a 1 or 2TB Intel rather than the Corsair.
Increase the PSU to 850W.
Remove the Thermal paste.
Remove Bullguard.