The bottom branches have powered up to the top, so I still remove them later ?6 plants in a 4x4 is plenty.
1 top is sufficient imo
just let it grow for 3-4 days and take another photo,
probably you'll be ready to flip in a week.
weeks 2 to 4 of flower make sure to visit groom every day to keep scrogging
days 14-21 would be ideal for lollipopping, remove all bottom growth, bottom third can be removed without a concern..
good luck man