In the near future, you will want to move it to a larger pot. When you do, add some perlite in the new soil to decrease the soil compaction. If there isn't enough air in the soil, the roots can drown. The current mix looks fairly heavy, but you can likely make do. The plant may get twice as tall when you flip it into flower, so if you are looking for an experiment and a small amount of smoke, you may be getting close to that time. The larger it gets, the more food it is going to want, so the smaller size may keep it a bit more manageable for you. If you have access to plant food though, you can keep going.