i actually just started in the final pot, its a decent size. i did a lot of reading and couldn't decide , i guess starting in smaller pots helps them develop a healthy root ball and fill out the dirt but the little pause in transplant while it readjusts you never get back with autos... either way as long as they end up with a decent sized space i assume all is well.and i decided not too do any trimming i kinda just tucked the bigger fan leaves under the branches so they can break through to the top, yours seem to have more distance between the nodes , and i like that because you have better light penetration. if i can help these branches poke im sure i will have better yeild ill post a pic in a little to show what i mean , its really cool just to watch how much it can grow in as little as a day once it has some leaves making food for it;//