Need advice to trim or not to trim?

Suren1987;2792696 said:

Hey everyone, I am a first time grower.
I planted S.A.D. SWEET AFGANI DELICIOUS from Sweet Seeds.
Some specs:
Indica / Sativa: 90%-10%
Indoor Yield: 400-500 g/m2
Indoor Blooming: 8-9 weeks

I'm growing indoors under a 100w CFL.
At the moment I am on week 8 and I'm counting from the time I germinated, and still on 18/6 phase (veg)
Here are some pics:

idk why but 402 upload flipped them to horizontal view

My question is, should I remove those big leaves? they seem to be in the way of the smaller ones growing under, and these big leaves don't have nodes so not sure if they are really needed.
And if i should cut them, should I do it one by one every day or all at the same time?
When do you guys recommend switching to flowering?
Current hight of the plant from the soil is 37 cm or about 14 inch

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