Leaves are purpling but very few redning pistils.
Order handheld jewellers loop x 60 for less than a fiver on ebay, look for a few amber triches before harvest. Good luck
Absolutely you are committed now ,I strip bottom 50percent of leaves 2 weeks before flower.
You will shock the plant when you harvest which will stop it growing for a week or 2 but if space and time available why not
I'd use a shallow pot with soil, I found if you tie em down height not much different in sativa and indica, air cooled lights help(as long as sound ain't a problem) as you can get light close to pot and prevent stretch, also bit more red in veg keeps nodes close, also keep night and day temps...
Lollipopping is way mate then plant will put effort in on top instead of popcorn, same yield in my eyes but all big buds and easy to trim, good luck
Quality bud and