I went to the music store and saw the head I wanted. A Peavey Max 700. I was blown away by the sheer mass and weight of the thing and decided I just cant have something that heavy and big. So, the alternative. A GK 1001RB, 3-space SKB shallow rack, and Korg DTR-1000. Pretty light, and would look cool too. Now to the questions. 1. Is the GK top ventilated or back ventilated? 2. Depending on ventilation, do I need to leave a space above the the GK cause I dont really like when theres an empty space in a rack. 3. How far down can you detune with the Korg? 4. Will it tune down to CGCF? Thanks in advance for any replies!