I'll grow in a downstairs room that has a pretty constant temperature throughout the year. Year around, it never gets really cold outside where I am located.
You are right, I am concerned with the height of the tent.
Apparently, with the medium Adjust-A-Wings (wide setting), Super-Spreader and 600W, you can go lower then the 24 inch recommended light height for a regular reflector with a 600W bulb, but this is what I am trying to find out...??

Can the light height be reduced with the medium Adjust-A-Wings (wide setting), Super-Spreader and 600W bulb ?