Self drive safari advice - Starting/finishing in Jo-burg!!

[tonto1]

Just looking for some holiday advice, we have 7-10days free next month and I am looking for some suggestions for a self drive safari. We will be starting from Kruger and need to finish back in Jo-burg. Current options are:
1.) Up through Southern Botswana to the Okavango and back (could be alot of driving for 7-10day).
2.) Swaziland and then down to St Lucia.
3.) Limpopo National Park and down the coast of Mozambique

Any thoughts or advice appreciated.

[coetzeeh]

Not been in that part of the world for many years but I would do Kruger, then through Maputo/Inhaca and then head south to Ponta D'Ouro, and south to Sodwana? depending on what the roads and security situation is like in Moz?

[BigsimonY]

Topgear style adventure. Spend no more than 800 on a car lol.