Its always a good idea to flush the radiator before filling it with coolant. Afaik, tap water would do just fine.
I would suggest that you install the cpu, ram, M.2, and the cpu waterblock/cooler on the mobo before placing it in the case then install everything else. Though it would be fine to go with the mobo into the case first since its a huge case with a lot of space to work with.
I think the airflow is fine. The bottom fans, atleast how they're shown in the photo, would be considered intakes since the air blowing into the case.
About the Pump-Res combo, you can "hang" them above the cable holes on the right, so no need to remove any of the standoffs. The image below could be used as reference.
PhpManilaBeer got a reaction from NaLu in First Build Underway, Follow For Updates And To Help Me Plz
