You have some good ideas Graham, I think I will do similar. The house as such is quite secure. The windows on the sides are very small, and metal framed (small panes of glass) which I dont think anyone could squeeze through. The front of the house has roller shutters that are locked, the gate is locked with a padlock, but like you say, keep your loved ones safe inside, anything outside is replaceable (mostly)
Here are a few pics, you can see the roller shutters, small windows. The green colour was before I we painted it. lol
