Nice plants. I've sometimes wished I was in a warmer climate so I could plant more clumpers.

Two points:

1. Why don't you plant a runner or two with a barrier in place?

2. It's not a big deal to add irrigation for bamboo. You would just need to tap into the nearest irrigation line, add a $5 pressure reducer fitting, and run 1/4" drip tubing, which can be easily buried an inch under the soil level. Just take a shovel and chop a narrow line that you can press the tuning into...no major digging.

Thanks.
Since I live in a climate that allows me to grow the clumpers, I have decided to stick with them in the ground. This way I wont have to deal with a barrier. However, when I buy the vacant lots next to me, I will re-consider this idea.
As for the irrigation, I already run the micro irrigation to the boo. I currently have all of it on one zone. For the amount of bamboo I want to plant, I will probably need three or so zones. On top of that, when I put in my lawn irrigation, I spaced the sprinklers too far apart. So, over all, my irrigation all around needs an overhaul. I am thinking this fall or spring to do the irrigation. I have a 16 zone open source sprinkler controller. I can buy extra boards and expand 8 zones per board. With all of my planning, lawn, shrubs, and bamboo, I will use 14 zones.
The irrigation I used for the boo is the irrigation line (dedicated zone), ball valve, sediment filter, pressure reducer, and 1/2 inch black flex line. At each clump I put an adjustable, up to 10gph, micro sprinkler. I would guess I have about 300-400 feet of 1/2 line and a micro sprinkler at each 3rd foot.

Wow...that's quite a system. I live in the Pacific NW, so my watering needs are less. I can see why you want to plan out this project.