After you decide how big a space you will use for this and what type of method of gro, you need to look seriously at ventilation for the grow. Your plants need fresh air to breath just like you do. The better the air is for them, the better they will grow and yeild. A lack of fresh CO2 will translate to less yeild.
Also, that room is going to build heat within its space. Having it in an enclosed room where it isn't exposed to cold will allow it to build heat and humidity quickly. The answer to both of these is ventilation. Most peeps here like to have one exaust fan that pulls fresh, cool air through the lights to keep them cool, and if the space is big enough another exaust fan to pull out the warm stale air and pull in fresh air. You don't need to put fans on the air coming into the grow space. If you use exausting fan(s) to pull air from the room, you will be able to have passive air intake.
You need to consider how you will cool and replenish the air in your grow space before getting started. I actually use AC in the summer time but I also have air pulling from outside to refresh the air inside (and it can get challenging to ballance the temps and fresh air sometimes) Just some food for thought