Savage,
You'll love the Delta. I was there a few years ago flying for Moremi Air.. As previously mentioned, the 207 is only operated by Safari Air, and they don't tend to hire new comers but rather take guys who have been flying out there for a year or two...
If you can get a 206 tick it will help, but it's not essential. It's more about whether your face fits... Recruiting starts earlier every year, so my advice is get out asap and start getting to know the operators and the the pilots. It's a mad place and the flying is out of this world.. Sadly the draw of the big jets, a career and more money will take you away - but the memories will be the best you'll ever have... Enjoy it!