Keep it siiple. Don't use a tent and you don't need a "ventillation plan"
Unless it helps you maintain an approrpriate RH, there is no reason for the tent. Early on it would cause an abnormaly elevated RH and not be helpful. In such a small space good luck getting any circulation fan to not cause excessive wind over the buds, too - it's not like the walls absorb it, lol.. still moving around way too much air relative to small volume of tent.
Use a small room. Take the canvas off or unzip the walls etc. Can still use it to hang things, if needed.
Circulation in the room is plenty, it does not need much to make the RH spread out evenly... it mostly does it by itself. Contol RH and temp for the room, which you'd have to do anyway if the tent is exchanging gases with it.
The other benefit - it's not wasting your tent unnecessarily and you can start your next grow cycle, if needed.