So this is my first grow and I did a lot of research before I went into it, and one of the things people say is to use a gallon pot for every foot of plant, well I have a four gallon pot and my plant is about 3 and a half weeks into veg and is about 14 inches tall and the roots are already headed out the bottom.... So should I transplant? Because I was hoping to be able veg for another week or two. But I feel like transplanting a 4 gallon pot will be difficult and I don't want to ruin my plant.