Once again Skizors, layin' down the good advice. If there is one thing I can add is just to get your environmental concerns in order before you germinate your seeds. Set your light on the timer, get everything up and running and monitor your high and low temps and humidity during both the light and dark cycle, just to make sure your not going to have to be dealing with any extremes after the fact. Things will change with the plants but this will give you a good start.