Tent/grow room size

Looking for some opinans on a tent size trying to grow rdwc 4 / 5 gallon buckets 50 gallon res . And 1000k light maybe two to achieve yield , want to get about 6 oz per plant need some strain ideas to wanted to grow gsc but not sure of the yield .veg no longer then 4 weeks out of cloner thanx

4x4 or 5x5

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should be able to do it with 1 1000w and a 5x5. Thats what I use with some CFL and t5. I thinkg TWO 1k lights would get too hot.