That's a large space, I read about square ft (30x30cm) gardening you could pack it in if you wanted.
I haven't even found a tomato yet, never mind a red one.
Discussion
I sowed them around 15 May, they had been in the house till May and after 15 May I started to put them outside into the garden for a few hours. And I transplanted them to the final pots somewhere around 25 May because it was cold nights