Help a PC idiot learn about extra fans

Help! I have no PC knowledge. I bought the parts earlier today for my first ever build. However, I forgot to spare some money for additional case fans.

Will I be okay without for now? My CPU cooler is the Thermalright peerless assassin, and my case is the NZXT H5 Flow with 2 fans pre installed.

Will I be okay without any extra fans for a week or two until I get more money? Or should I hold off from building until I can get some?

I also want to throw out the only game I’ll be playing between now and then is Rocket League which isn’t very hard to run at all.

EDIT: forgot to mention, my cpu is r5 7600x