Alternatively, speaking wildlife here, I know there are a lot of budget conscious shooters who prefer a cropped frame camera, think Nikon D300, Canon 7D, Sony A700, Pentax K7 etc. This allows them the length of lens without having to go to big super pricey glass. That 300mm lens full framers shoot with becomes a 450-480 equivalent on a cropped sensor 1.5/1.6. If you're going to be out in the elements I'd look at a weather sealed camera.
A workshop is probably one of the best investments a new shooter can make., but it's a buyer beware type investment. Lots of photographers offer workshops, but not all photographers offering them should be running them. If you can find a manufacturer backed photographer you're probably going to get something worthwhile. In any case screen the photographers credentials, don't be affraid to ask what makes them qualified to run a workshop. A photographer worth his weight should have no probelm answer ing that question. If they get defensive, forget it.