No, you can get the whole of the rest of Africa in two PQs - there are currently about 1008 active caches. To generate a PQ which covers more than one country, keep CTRL pressed while you select the African countries one by one. (This is a trick I learnt from Jors!)
Brilliant! Done... works like a charm! And here I was multiplying a 10th of SA's total by 51 (last time I checked) to get an estimate of how many days the PQ would take to run! Thanks...