It will be very tight on space. I'd keep the Veg time shorter.
After switching to flower, the plant is 1/3 it's finish size, and you'll still need room so the kola doesn't get heat burn. 2x2ft of area per adult plant for smaller grows.
Sorry to say, your crop will be small.
Than again, I personally veg for longer. My state only allows 6 in flower so I bush the hell out of them. 6x6ft per plant
My first grow I used a 2x4x6 with an "aquamist 4", by growgenie, without the legs.
I used a 600watt ipower aircooled hood . Trellis was a must!