we have been growing a few diff varieties of plants ...some diff chems,kushes/etc- we veg in small cups for a couple/few weeks, then into 1 gallon pots for a couple weeks, finally when we are ready to move into our flower room, we transplant into 3gallon pots- so the question is ... is a 3gallong pot big enough??? when we cut there still seems tobe ample soil for root expansion.. thanks