Kind of strange. Because you liked someone else posts which stated a similar thing to mine. Too many arseholes on this site picking fights for no reason I think. I dont need this just for stating my opinion. Leave you people to it.
Up to you. I been growing outside for over 40 years. we hit over 110 in the shade here. I found thick mulching was the key. Never need to water more than twice a week. Sorry for disagreeing based on my personal experience.
Thick layer of mulch on the top might work. Also there are simple ways of leaving plastic containers near the root system which slowly leak out water. I used to do a bit of guerilla growing and used that method a couple of times.
Hi mate, give them the big light, as long as the light isnt close enough to fry them with heat they should be fine. I personally wouldnt worry about the clayballs, your coco/perlite mix will do the job just fine.
You will still get good dope if the plants are decent genetics. You just have to either pick out the seeds before you smoke it or make concentrate or hash. The only reason you would harvest early so as the male bits dont affect other plants.