OG Kush Auto & Stardawg Auto - 1st grow!

Hey Guys, first time grower here so wish me luck! - purchased a 90x90 (3x3 for the mericans) tent as well as a Viparspectra VA1000 LED light, 6" carbon filter and all the necessary metres and stuff. Using a super soil mix from Dr Greenthumb. Mixed an extra 2l of worm castings into the soil for good measure and used a worm casting/perlite/coco fibre mix to provide an area immediately around the seedling to grow its first roots. Seeds are from 420fastbuds - 2 OG Kush autos and 1 Stardawg auto. I was initially going to use 12l aerated pots but last minute decided to put 1 OG Kush seed into a 28l pot to see if size really does matter. Soaked seeds in water until the shell popped then simply placed it in the soil. It took 3 days for them to crack the soil and they're looking nice and healthy. Light settings are 60% veg and 30% bloom - 72cm from the plant. Just trying to manage humidity as it's winter here atm so cut some bottles in half and put them on top of the seedlings for the next day or two. Happy growing everyone!