you can end up with root problems really easily from doing this, if your soil doesn't drain proper it will rot the roots. i've been going over this as well. i've found it works best for me in this order. 1.5" rockwool for clones. 6" or 10" pots until rootbound or leaves are over the edges, depends on individual vigor. (i've never seen a growth lull between transplants either.. weird.. there's usually a new growth spurt the next day.) first batch ended there. new batch is in some 12" 3gal short pots. should allow for some husky growth, more shrublike. i've found that this keeps root problems to a minimum for me, i know the plants are anxious to fill the new containers by the time i replant. i don't have to worry about a plant rotting away slowly, or not getting the nutes/water it needs because the roots can't get to it. i suppose if you were really careful about perimeter watering, and watered at the edge of your foliage footprint in the pot, you could transplant into a big pot soon. seems like a pain. now that i've got enough pots, i won't have to be potting up unless i go hogwild on a new batch of clones or something. strictly revegging should be feasible with my setup now. good luck!