Hey before you transplant, you might want to go ahead and go to your biggest pot. 5 gallon bucket will work best. minimizing transplants will help lower stress levels. and the reason being you dont want to transplant to small cups right now is that they are indeed stretched, and even if you fill the cup soil your roots will be at the bottom of the cup in order to cover up and the stretch from the stem. and with the roots being so low if not on the bottom it will give them no where to expand thus restricting the growth of your plant. so go ahead and transplant them to a bigger pot that you will be able to keep for a while. also giving the roots more room to expand helps speed up the veg process.

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