Sizewise: for enough space for two (very tall) 20 year olds.
You've all said what I was thinking! A tent with outer will be a sauna in the mornings, and good idea to take off the outer. But then it is no more less secure or less private than a tarp with a mozzie net sleeping bit, so might as well go for the latter, right?
Does anybody think security will be a problem? We're not going deep into the bush, most times will be near civilisation. The countries are: Namibia, Botswana, Malawi, Tanzania. I was thinking of a tarp with a (very big) and dense mozzie net.
And great to hear the group is back up and running! I am off to Oxford tomorrow, but I'll be back this way in september, would be great to meet up.
Thanks,
Harry