I am building a new rig, have nearly everything (well waiting on orders)

Meshify c
5600x (which I plan to oc)
3070 FE (still hoping on a 3080)
Noctua D15s
Ballistix CL16 3600MHZ 32GB

My question is, will the case fans, along with the D15s be enough? Or with the space, get 3 slim noctua case fans for to quid. Is it really worth it?