Can any experts out there help?

I am planning on putting up a screen at the side of my house using
arrow bamboo but despite looking on the web for a couple of hours I
haven't managed to find out -

1. how deep the roots need to grow in order to reach 4-5m height (the
plants will be in a confined brick trough).
2. I would like near complete screening of light - what depth of
plantation would buy me this? and what density do I need to plant the
shoots?
3. Where can I get and at what height should the plants be to get
established quickly (say in 1-2 years)?
4. I have (approx) a 5m "strip" of screen to grow - what quantity of
plants should I budget for?
5. I understand that my screening could be jeopardised if the plants
flower - how often is this likely to happen and how severe is the die
back?

Any feedback/advice would be great.

thanks

Ken