No expert here but most lights have advertised guide lines for footprint sq/ft during veg and flower. Unfortunately, it depends on the light and varies quite a bit. Although, 2 months veg in 7 gal pots and the plants may get too large to run more than 4 in a a 5x5 tent. I ran 5 gal. And 6 are tight in a 4x4. I also veged 2 months. Hope this helps.