Is a 7 gal pot too big

I'm getting ready to start my first auto flower grow got some advanced auto mass seeds. I have 3 gal pots I normally start in and 7 gal smart pots to finish. I want to maximize the yield on these but haven't seen anybody use much bigger than a 5 gal. There's no shortage of light and space (2-1000w hps in 8x8 room). Would it even be worth it to use the 7 and just stay in 3 or should I go get some 5's.

Auto grown in 7 gal ...

i would suggest planting straight into your prefered pot right away.

Use ur final pot off the bat. Coax your roots out by watering in rectangles away from plant leaving center unwatered. I use recycle bins and run 4 on 1 off for first 3 weeks then 18\6 till chop. 3 oz in 70 days auto lemon haze
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