Im considering buying a HAF 932. The side panel of that case has a 230mm fan stock, but can accept 4x120mm fans. Would the 4 sickleflow fans give me an increase in airflow? Noise is not really an issue.
The side fan of the HAF 932 is rated at 110cfm, you'll have to get 120mm fan that rated higher than that, but it will be kinda noisy.
You can just get a fan controller and tweak the RPMs as you wish, as long as you have no problem with noise .