May i firstly say what a nice neat setup you have there!!
Sea of green, or even better Screen of green are most definitely the most efficient way of growing, although make sure you monitor temperatures very closely, and make sure there is enough air flow through the setup.
http://www.growingcannabis.co.uk/?q=node/66
Here is a very good article all about sea of green, check it out it is very thorough, and please check the other articles in the grow guide by click the link at the top of the page
http://www.growingcannabis.co.uk/?q=node/66