TaroC

When will i be able to play this on my phone?

Sounds sufficient enough, but If you have the opportunity to also install an exhaust-fan in the top of the case, I would strongly consider in doing that also  

I'd just put the fans in to be honest and keep the case fans. You want the fans for the coolers moving the most air, so probably exhausting at the top or intake in the front or bottom. You also have to take into consideration where the case will be placed (back against wall, walls on the left or right, etc.)

My airflow is a bit unconventional but it works well in my situation. Having said that, a good general rule is intake in front and bottom of case (usually cooler air) and exhaust out the back and top of case(heat rises and back is often facing a wall for many people).
 
As you can see here that's not quite what I did but I had a reason and tested it to make sure it was the best option. The reason my rear fan is intake is to give fresh air to the CPU cooler and cool the RAM and make sure I maintain positive pressure (I also don't have the back of my case against a wall). Just make sure any intakes you have have fan filters.
 
Some people like to have the GPU rad in place of the rear exhaust but my tubes are not flexible and I think this way looks better anyway.