Struggled a bit with heat, had to put a fan over canopy. The hps has made a noticable difference in hardening up the buds. I rhink another 10 days to 14 days left.
Update day 49: as recommended by @B4RNS I have reduced the last week of feeding to e.c 1 prior to a week of flushing! New video added with lots of heads!
Ive decided against the hps and added another 315w LEC, so there is now 3 315 LEC in total. 2x 3100k and 1x 4200k. The temps are lower using LEC than using a hps even with an air cooled reflector.