It will work..
2x2 is tough to grow in. I have one and it's my primary grow space. If you want four plants it would be best to grow 12/12 from seed in 1 gallon pots.
I have 1 plant in a 1 gallon right now and it pretty much takes up the tent. Last grow I did 1 plant in a hempy and it pretty much blew the zippers off of my tent.
1 gallon soil
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2 gallon hempy topped several times and trained. 2x2 tent. 2 good COBs running at 180w.
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