Hi ,
If you want to do asuccessfull run with automatics... here my hints
let them germinate, directlyy after germination , plant the seed in their final growpots ( smartpots are great for outdoor=
they should have 11 and more liters of fluffy MJ-Growingmix ( light fertilised only light)
look for a sweetspot in the year where you have alot of light ( like last week off may.......) and start there
happy growing
these would be the conditions where they grow the best
starting them in a to rich soil, ot to solid into small pots in the middle of march.........is the opposite of optimal
and they will stay short