I'm just going to let mine grow for a while. I'd rather have a bushier plant anyway, as a tall plant is likely to be knocked over by the wind in my area (or at least, if it does get knocked over, the damage would be less severe with added bulk). If I do any pruning, it will be to remove stems growing inward, to open up the middle to more air flow and remove extra foliage obscured by the canopy growth, the trade off being that peppers would form along areas of new growth, too. I think the same logic applies for pruning in general- having lots of stems and foliage touching just encourages pests and diseases to move freely around the plant, but for young plants it's probably better to let them establish before you go hacking away at them.