Lighting Reccomendations Please1

I have 2 trays (6 plants each) and running a 600 hps and 8 T5's HO 4@6500 and 4@2700, I am getting great coverage and the plants seem to have far less stretch than past grows using a 600 only. I have a 1000 ducted fixture if I want for free as well. My question being would I be better off just running a 1000 or keep using the combo. My power capabilities are maxed so sadly can't run all at once. Heat is not an issue (well not now, cool outside) and I am covering an area of appr 4 x 3. Yes it crowded lol. Thanks in advance!

Lighting will be very important for good plant growth. I'd think about using some fertilizer too. Best of luck around the house.

Wayyyy better off using 1 1000 watt for several reasons. You wont be drawing as many total amps if you have just one light plugged in, also a 1000 watt light will put out wayyyy more lumens then 8 T5's. You also decrease your risk of a fire if you have only one lamp plugged in as apposed to 2. Im a big fan of t5s but your just taking up more space in your grow area, go with the 1000 watt, that is a good amount of light for 12 plants.