Oh wow. I have heard of things in South Africa. I would not set foot in that area without something hi-capacity and reliable - so forget my other post.
You have a G17 coming - so stick with that and get the 1911 just because. I have a G14 4th gen that is hardly broken in with 75 rounds. Is accurate high capacity and i can take it apart in next to nothing. I was thinking of building up a g21 with a few spare parts and tried taking the slide completely apart for first time with just a few seconds youtube video. They are great simple reliable guns.
Good luck. And make sure you use correct ammo in the glock. Not crappy reloads that could cause problems and correct home defense so will not carry through the walls.