t5 vs cfl grow light question.

yo guys after my grow im doing which is a 210 watt cfl grow with one plant, i want to be able to get a new lights so i can do 2 plants. My question is which light would be better. my grow room is about 20" depth, 47" wide, 54" height

  • 4ft 4bulb t5- 210w 20,000 lumens and run just that light
  • get another 185 watts of cfls and my room would have a total of 400w and about 27000 lumens

My goal is to get about 4 oz off two plants and i would either do topping, lsting, supercropping, or do a scrog-i would do this if i got a t5. So which light would help me achieve my goal also i would be running mostly all high yielding strains.
 
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