There are certainly different views on container size. For my setup, I can fill my room with four plants or I can go will smaller plants and fill it with a dozen or more plants (have done as many as 28). I no longer grow in anything smaller than 7.5 gallons and lean toward 10 gallons.
The smaller pots represent more work and more soil issues to deal with.
I am reasonably sure that I could increase my overall yields by growing a larger number of smaller plants but I have no need for higher yields and I like growing large plants with large colas.
Each of us must figure out how we want to grow and insure that the conditions the plants need are present, regardless of the techniques that we choose to implement.
Good luck with your grow, I am certain it will be great.