this is old but think its a little wrong , running your temps higher during lights off will actually keep ur plants from streaching and keep internodal space tighter and prevent dew .
give her some more grow nutes . shes hungry . . she can probly take more than the others . u always get a fat kid in the class that eats more than the others
go bit easy on the nutes , a would just give plain water for couple weeks , dosnt look to bad , that is lack of light down at the bottom , you should be chopping a good 3rd of that plant away , dont be scared ,
yeh transplant before watering then give them good soaking , depending on the new pot size they may not need another watering for a week or so , also add some maxi crop , helps with transplant shock
a 1000w , 20 inches fuck me , i use 600`s and they bout 2 ft away , 28inches to be exact anyhow , ive never used 1000watters so carnt comment really but that seems way to close