Hmm, dont really know anything on transplanting because I always plant mine in the pots that theyre gonna be in until harvest. Just make sure you do it quickly, and without touching the roots if possible. They WILL be stunted, or may even stop growing, for a few days - sometimes up to a week - afterwards. If youre really worried about it, try transplanting a few plants around the garden until you feel confident that youre ready to try it on a 'decent' plant.