Howdy! I'm also growing in a pretty small tent (4x2x5). I think that from what I've read, just maximizing that canopy sq footage is the way to go. Likely a SCROG with 1-3 or 4 plants (depending on length of veg and size/bushiness of plants. Early topping during veg to ensure lots of bud sites and some LST tie down or supercropping to encourage branching and manage vertical growth. My biggest concern for my own tent is the 5 ft height being too short, but between picking appropriate genetics, training/SCROGing, and making sure your light is adequately powered & hung as high as it will go (ratchet hangers or just hanging directly to the top bars of the tent), you should be good & can grow some fire ass herb in there! Good luck!