PC70 here in Portugal costs €260.
For me, it's better to choose the Chieftec BIG TOWER, who costs €115 !! (with chieftec I can use my airplex in the back)
A radiator inside the case doesn't really work in a propper way, right? Is this the reason why having a fan in your window?
In your next case the radiator should be fixed like this one, for example,
warm air can be taken out by the fan(s), this will make you better conditions inside your case.