well bong... you can transplant to a one gallon pot but remeber the bigger the pot, the bigger the roots, the bigger the buds. How far along are your plants your going to transplant? I use rockwool cubes for my seedlings then i transplant 2 weeks into veg into a 3 gallon pot. After 2 months veg in transplanted into a 5 gallon pot. then after 1 more month of veg i put her into flowering. Also are you growing Sativa or Indicas?