Diluted Lucas formula ' OK or not?

i take cuttings,root them then flower as soon as i can get a few branches,, that way by the time the rooted clones are showing sex the seed mom is about six weeks into veg,, i then take more cuttings off the now mature mother,...

Today is day (75) from seed
Day (42) 12/12
I've been slowly bringing the ph/ppm down over the past week due to fluxuating readings?? Anyway 'plants look happy and getting fatter every day in this coco, I remember feeding a little too much in soil or even a little to much water and BLAM!! the girls droop for 24/48hrs
In this coco/perlite mix ' I'm throwing 3/4 gal through the media on a day to day feed of 2 feedings and' no sign of over watering? I love it and' as soo as I can my feeding under control I will be ready for a hydro run I think?
I've been looking at the twin flow grow system, you can grow 2 massive plants in them for sure? And it has a 45litre tank so rez changes will be few and far between i think? Ive also been secretly looking "deep into cree cob lighting for a 2x4 grow I'm planing in a few months,
I'm thinking of building a 8x cxb35090 on 2 parallel bars with drivers mounted in the middle and maybe supliment lighting like far reds and some uva diode's?
Anyway, I'm rambling 'but I will keep you all posted on the build and future developments lol

BACK TO THE PLANTS
I'm feeding 2x 6hours apart
1litre each feed per plant
6litre per day
Ppm 500@.5/ec 1.0
Ph 6.0
I'm going to keep the ppm around 500/600 because my plants like the weaker feeds for some reason? Not a bad thing because I save on poison lol