Hi! I have the ts1000!
I keep it at a fixed height (30cm) starting at 25% for the first two weeks (1 for germination which I don't count as a "week" and 1, the first, for vegetative) then I increase by 5% each week, reaching about 75-80% by the end of flowering for autoflowering. Usually, though, I only grow 1-2 plants; if you have 3-4, raise it to 100%, even 40 cm, from mid-flowering :) it's only 150W, you won't risk burning the tops :)