Just an update.
Got it all setup and working, the problem Ive had is my small aircon struggles with all the lights on when its really hot outside, we are in summer now, anyway what Ive done is have the aircon, humidifier and gas on with 1/2 the lights on for 6 hrs during the heat of the day, and then all that switches of at night and I full vent the room through the 12 hr night so I can run all the lights, working great and keeping the room at a constant 27celcius lights on and 23 lights off. This is with outside temps hitting 36 to 40-celsius day and night 23 Celsius.
Its a bit of muck around and I only get to gas for 6hrs but it will do through summer, during the rest of the year I feel I can gas throughout lights on, cant increase aircon size because Im right on power limits.