Months later and all three plants have been growing on the window sill very successfully. The plan remains to allow them to grow for as long as possible on the window sill and then replant them inside the pipes I will install in the studio.
This experiment of sorts proves to me that the plants are not impossibly hard to grow, just that they will not sprout in the studio.
It is unfortunate that the seeds planted in the studio failed in terms of my concept. I think that the temperature and light in many locations around the studio were not ideal and the space for growth was very limited, resulting in the seeds just not being able to sprout. I was also unable to give the seeds as much attention as is needed in the early stages of growth.