essnine, I'm in the exact same situation. I plan on a dozen plants grown up to 5ft(lower than fence) and a couple of pounds.

Thinking of growing Cali-o, Afghani and Skunk#1 and maybe Bogglegum.

For security you can trim the tips off the leaves, so the uneducated won't recognise it as a mj plant, you can use a fish mix fertiliser/supplement and garlic pest spray to mask most of the smell also..