This is how they look like after the first week of germination, some red color saturation around the leaf, that's because it's a red version! Incredible!!!
For the trasplant I will use the smart pot, the only pot that really let your roots breathe!!! Thus making some incredible big buds!!!
as size I would recommend between 11 and 19 liters (#3 to #5)
Next we add some good soil/compost mixed with an extra nutriments like the Bat Guano which is one of the best pure organic fertilizer:
It is important to leave the soil very aired, do not press, otherwise the roots won't have sufficient space to develop and will result in a much smaller plant!
To prevent this you can add some beads in the soil: