You can self-drive a Tanzanian vehicle with a European driving licence. My recommendations would vary depending on where you plan to go and how much time you have.
If you are really planning on seeing a lot of southern Tanzania, remember that very few stretches have tarmac road. Basically there is the main highway to Zambia, the stretch from Makambako to Songea, and a new bit south towards Kilwa. So make sure you have a good reliable 4WD with jack, good spare tyres and tools, and that you can lock it up, as things disappear with ease in Tanzania, even in remote places. Many car hire companies will hire a vehicle with a driver. This can have the advantage, if he is also a mechanic, as he can look after the vehicle and its contents. If you decide to do this, maybe go for a test drive with him, as some drivers drive recklessly.
The Selous would indeed by wonderful to visit, and so would the Udzungwas (if you like hiking, and birdlife), and above all Ruaha, which is a real gem. Do not miss Ruaha!!! When you arrive in Tanzania I recommend that you buy "A Guide to the Southern Highlands of Tanzania" by Liz de Leyser. It is excellent. If you also like scuba diving consider eco2 diving near Mtwara. If you have less than month, don't plan on doing too much. Tanzania is a big place, and the poor roads mean getting around can take time. It is a wonderful country. Have a great time!
On: 21 February 2013