Your right on all the plants above. Bulbs do get good results being ephemeral, they get out of the way later as they pull in their resources as far as light exposure goes. Their contribution is significant and it is not a problem for the semps as they push through mature semp cap on the next cycle. But you will run out of room so it is important to keep expanding the plantings. I noticed on another thread that people were growing in cinder blocks. I have used these too for smaller varieties and smaller quantities and seedlings. Supplemental watering is not as necessary in blocks and the roots are less stressed. Moving from block to tire and back if you want to isolate any sports is handy too. Enough pups can be harvested to setup a tire from a few blocks.