Well I guess, I am going to place the HDD in the other part of the Case in front of one of the 120mm fans in the 3-bay brackets with rubbers like Cooltek´s "disc silencers"
3 Single Slots are used for DVD LCD an controlling unit and the others on the left are completely free. One triple is mounted on the right, where the pumps are. So I wouldn´t get into trouble with my pump tray.