Mixed strain grow

The seeds were germinated in paper towels inside ziploc bags. The first Acapulco gold was slow so I germinated a second seed. Both germinated and I´ll keep the second one outside on the terrace. So, when germinating, I started a few backup seeds in case my primary selection of strain seeds wouldn't germinate. The backups this time was a Northern Lights and an OG Kush. The OG Kush seed didn't germinate quickly, so I started a second seed as a backup for the backup. All my primary seeds germinated so I don't need to plant the OG Kush seeds. I only had enough soil for 2 extra plants on my terrace, and I selected the Northern Lights and the second seed of Acapulco Gold. Such a legendary strain is worthy of being grown both indoors and outdoors. However, the slow OG Kush seed is coming with double power now - it has 2 tap roots!!! I've never seen that before. I'd love to stick it into a pot, but I have no more soil. Update: The seed with the double tap roots was actually having twins. They are totally separated and grow independently. But one of them was very small to start with. So far I'm keeping them alive in a moist paper towel. Second update: Sadly Petite Wi-Fi didn't make the transition from a seed into a seedling. Her tap root grew very slowly, and she doesn't open her cotyledons. I planted one of the OG Kush backup seeds right next to her. If she doesn't recover I'll complete the grow with the OG Kush seedling instead.