I wouldnt advise a SOG from seed. Youll get too much variation in height and other characteristics and the plants will require too long of a veg. From seed, youll want to veg at least 5 or 6 weeks before flip ideally. For a true SOG, you need to use identical clones with minimal veg time. I would even take twice as many as i needed and use the ones that were the most similar and sell off the rest to get uniformity.
What you should do is take a cutting from each, select the favourite after this crop, then grow it into a mom and clone it for a SOG.