Shall i remove the bottom 1/3 ?

hi mate..nice grow :)

i would remove lower leaves, especialy on 24K as he likes to stretch as hell and take that in mind :)
its best to defoliate at day 21 and 42 of flower or in the first 1/3 and the 2/3 of the plants flower cycle :) but any thing before 21 is ok also

hope it helps ;)