Thanks mate. Definitely get some Malawis man but make sure they're from Ace Seeds, I think it's the only version that can finish down there - late april-early may harvest.
They're pretty much rain resistant and weather proof. Look into some landrace indicas too like Pakistani Chitral Kush or Taskenti from Cannabiogen, the Taskenti especially is hardy and grows like a monster - I wish I'd properly put one outside this year.
I think it gets colder down there than it does up here in april-may, a greenhouse gives you an extra couple weeks I reckon - you're living the dream not having them guerilla!.
You should have some big plants in a months time.