Even though some roots are coming out the bottom doesn't mean that the cup is filled with roots.
Wait until they're about this size.
Or you can just grow it to maturity in the cup.
People transplant and train autos all the time without issue. Done correctly, there should be no slow down because of transplanting.
Even Mephisto, who only sells autos, recommends starting in solo cups and transplanting.
I wouldn't know..........I've never grown that strain.
I have no idea how much my plants drink........I grow in coco and keep them saturated at all times. 1/2 gallon twice a day for every plant.
70/30 Coco/Perlite mix.
GH MaxiBloom from start to finish with tap water.
Start in solo cups and transplant to 2 gallon pots after 2 weeks from sprout.
Start feeding around day 3 from sprout to run off using pH around 6.0.
Feed daily to run off once a day in veg and twice a day in flower.
Never...
Don't do that. Don't mix coco and soil........they have different pH and feeding requirements. Either use coco or soil.
Coco requires daily feeding to run off and should stay saturated at all times.......soil has to go through a wet/dry cycle.