Skylim

Gotta love being alone in my apartment, eating some ramen and kimchi to pass the time.

From what I can tell, the fans you need for radiators must have a high static pressure rating. So the ones you have a decent, but I hear Gentle Typhoons are great. But, of course, you can never go wrong with Noctua fans.
 
For fan configuration, push/pull is the best, but not so much. Here's Linus's video on that subject, where he talks about the different fan configurations. 
 
 
Disclosure: I am only giving out information I read on the internet. If it turns out to be false, I'm sorry!