4 month veg questions

So I planted 12 autos, grew em indoors on 20/4 lighting. 2 of them ended up not being autos and didn't flower. I harvested the autos and switched the last 2 plants to 12/12. They are finally starting to flower! The problem is that they 3 feet tall but are still in a 5 gallon bucket, should I risk transplanting them to a bigger pot? Or just let em go and hope for the best?

I would leave them indoor grow , I use 5 gallon post all the time I veg 3 feet tall as well , I use smart pots, also you can grow7 feet tall in a 3 gallon pot you will not use the entire bag with roots there will be plenty room left. prob 25 % . just keep an eye on the water daily. im speaking from years of doing it and, I spend hours on the net reading learn new things

Ya I did the same and it just got to the point where I was watering every other day

So they wont become root bound in the 5 gallon buckets? I am guessing they will take 10 weeks or so to flower...