That's something i cant really answer mate it all comes down to the space you have for growing and the size of the plant you want to grow if i was going to do a 1 plant scrog and my grow area is 1.2m x 1.2m x 2m i would want at-least a 20 litre pot
it will be fine mate check this thread out and it should answer all you questions some people have amazing results 12/12 from seed ---> https://www.rollitup.org/indoor-growing/416589-12-12-seed-thread.html
if your going to scrog let the plant reach a decent size and ounce your ready to fit your screen over the plant transplant it into its final pot first so there's no messing around ounce the screen is down:peace: