[SOLVED] Roof Fans for Crosair 275R case?

Aug 15, 2019
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going to rebuild my rig and i have 2x 148mm fan sitting here

Currently using 3 front fan sucking in and the standard back fan taking air out

ASRock B450M Pro4 with AMD Ryzen 2600 CPU and MSI 970 GTX

The roof fan gets a little close to the board, but it seems the air flow is much needed to take the heat out?
My plan is basically this
1tUarpZ.png


or does it seem a little unncessary?