Depends on your style but since you say you are only doing a couple, start in 3" pots, pinch the growing tip after the 5th node, transplant to 5" pots, then wait until the 2 new primary leads and 2 new secondary leads have 2-3 nodes, and then pinch the tips of those.

Then wait 2 weeks, transplant to 3 gallon pots, and flower. That should give you a plant that is bushy and fairly short, and will finish at about 2 feet tall and wide. You can go an extra step and train the canopy rather flat to get more yield.