different strains

New grower. I am getting a 2x2x4 tent. That's the max I can get atm. I was wanting to grow 3 different strains. I had looked at hydroponics for a while. Now looking at sog method. Should I do soil? Is it even possible to grow 3 different strains in that tight of a space?

Has anyone ordered from nirvana and grew and think you might have gotten a different strain than your other? I am recently growing Nirvana pre 99 Big Bud. Both vegged for 6 weeks now week 5 of flower one is short and squatty the other is 12-16 inches taller. Now that is not what is perplexing...