What should I transplant in to

My little ones (kinda) are more then ready to come out of solo keg party cups. Thare around 10 inches tall and look real nice I let them dry out took one out of the cup and roots are to the limits for sure. Im looking to start flowering them in a month maybe 5 weeks. I was thinking about putting them in 1 gallons after the solo cups but I dont know now. Should I just put them into there flowering home now? I will be useing 4-5 gallon smart pots or buckets unsure of that so far though. Any thoughts on if I should transplat them once more or twice more? Thanks!!

transplant into flower bucket now saves repotting again and they can get filling out them buckets better.

i av done it both ways and now i actualy go from jiffy cup to intermediate size 2gal for 2/3 weeks then up to the 5gal ! this way i get less rootbound ! both ways produce a lot of bud if done right, the good thing about goin straight to there flowering pot is less soil less messing about, the plus side to intermediate size first is not much root bound as the plant used up all the space in intermediate pot first rarther strate into big pot where roots go down and then circle the bottom of the pot so ya roots get better looked after goin the intermediate way first !!! if ur wating 4/5 weeks before goin to flower then i wud go intermediate first !!!!