Those are 65w tdp processors, and there's no way you'll keep either one cool under load quietly with any heatsink that fits in the case. The case is not tall enough to fit the type of heatsink you need to keep things cool enough quietly. It only just barely fits the two 60mm fans. The only way 60mm fans can be quiet is to spin so slowly that the airflow is almost useless.
Not a good case choice for what you intend. Try an Apex MI008 instead. It can be made to run pretty quietly. See what was done in our review -- http://www.silentpcreview.com/apex-mi008
You'll still need a decent heatsink tho. If you stay with the stock PSU, then a 1U style copper HS with a big 120mm fan spinning quietly on the side should do it. A picoPSU will give you better options for cooling.
The Silverstone Sugo SG05
is bigger w/a built in 120mm fan, and has more vertical space so you might be able to do more with it. Don't know how quiet the PSU is, as we haven't examined one in the lab yet.