I've grown Barney's LSD. It's a medium height plant that if topped will be relatively easy to manage in a tight space. From what I can recall you can expect about 1.5 to 2 times stretch after flower flip. The LSD has a really dank woody/nutty type flavor profile. Very unique. She also lives up to her name so expect the finished product to knock your socks off. She has a very strong aroma as well so she'll give your carbon filter a real workout.