"then close to the floor i have 2 smaller fans, about 3 inches square... one extracts, one intake" that aint goin to do anythin. an outake at the bottom next to the intake? thats jkust blowin air out that the intake is bringin in. have them both as intake because u got the 2 at the top for outake. yes u can train ur plants if u have limited space. get some pics of your grow set up.