10 x 10 grow

Ok so I've grown 2 small plants, I'm no pro but I know what I'm doing. I'm moving to dc in a few months just so that I dont have to be paranoid when I grow. I live 10 mins away in va so it's not a big move. Anyways, I was thinking about setting up a 10x10 grow area and growing all of my plants using LST. My question is how many plants would I be able to fit in there? I was thinking 75, but I feel it's a little much. I'm planning on using 10 gallon fabric pots and 4 900w g8led lights from dorm room grow. Any advice?

in my experience you just don't know until you start your project, nothing will go as planned anyways, so just jump and grow-engineer it.