Advice on CPU cooler airflow

[Yr1699]

I need some advice. I want to upgrade my CPU cooler from a Hyper 212 evo to something like a H100iGTX 280mm, I currently have a corsair 750D and i'm not sure whether I should have the fans on the H100iGTX pulling air in or out and which fan for which airflow, I want to mount the radiator at the top of the case, I have two AF140 in the front pulling air in, 1 AF140 in rear pulling air out. I don't overclock even though I might in future and my PSU is upside down so that wont affect air in my case anyway?. I don't change rpm of my fans i just leave them to whatever they are and I want to keep my PC case dust free as much as possible and at the top of the case is a fan filter... need some really good advice! my PC specs are corsair 750D, Asus M5a97 EVO R2.0, AMD FX-8320, 16GB hyperX ram 1866mhz, Asus Geforce 760, CX600 psu(changing soon), 1TB WD Black and 120GB SSD, HYPER 212 evo. I will also change my current motherboard to a m5a99fx pro.
P.S the front fans of my case have a fan filter and a cover,also if you have a 750D please give advice and what you recommend

 

[Dark Lord of Tech]

https://www.youtube.com/watch?v=1kf43hPiR6E

 

[Yr1699]

https://www.youtube.com/watch?v=1kf43hPiR6E

Thank you but i need to know what is best, it has been bugging me for weeks now and that video is a bit hard to get some infomation from since its more a installation guide and I think i need someone who has a 750D and 240/2800 mm radiator in there build