Hi Karen
All i can say is WOW you have lots of courage to venture to Angola! Things are very different here, especially you coming from Scotland.
As for running over here.... In general its pretty safe in Luanda, but dont run after dark and the best place is probably along the Marginal - But its also a busy road. I would suggest you get someone to run with you. Not sure if there is a proper running club and road races will probably be few and far between
On the plus side is that the weather is hot and humid, so coming from Cold Europe you will feel like you in a sauna!
If you can speak portuguese (local language) that will give you a HUGE advantage.
There is so much i can tell you... so if you have questions let me know!