What is the best fan configuration for my build

Hey people in the community I was wondering what would be the most optimal fan configuration for my corsair spec-05 if my specs are:
-Ryzen 5 3500x
-Gigabyte Radeon rx 590
-240 gb sata ssd
-1 tb hdd
-16 gb 3200 mhz ram
-Gigabyte ds3h b450m
-500 watt psu that comes with case
PS-Also a side note please recommend me some parts so that I can save money like using an a320 motherboard instead of b450
Thank You!!!