Top Fans

Heyy I am currently planning my New build with a fractal define 7 mid tower (not the xl or compact just the normal one), and I am unsure on how many Fans I should get. Right now I am planning to use a nh d15 g2 and an air cooles 9070xt With a triple Fan Design. For case Fans I was planning on going with 3 140mm in the Front and one in the back. But recently someone I know recommended to put 3 140mm in the top as well. This would add like another 100 bucks in Fans for me. So would you guys say the 3 Fans in the top are worth it or to ignore?