I have finished plants that ended up being 4 ft tall, and producing 20+ grams....in the 3.5 container. [/QUOTE]

That is not enough green for a 4ft plant. If I dried out my girls after a few wks of flower without finishing them just the bud sites would weigh more. Is the + part of your 20+ grams hiding the rest of the weight? I had about 40+ grams with a 3 gallon pot using bag seed. Now using 4.7g pot with quality strains so expecting to stock up this season.

I like to transplant before flowering after allowing a few days to deal with any stress from the transplant. Also just a thought about temps. Soil temp is not ambient room/cab temp so if your soil temp is 70f your set, if not what would you think it is? I am guessing a few degrees lower maybe two or so. Not sure what the ideal temp for soil should be. Someone on here might chime in that knows.