Ouote 'My passion at the moment is wildlife, but I also like portrait work and shoot at family get-togethers in bad lighting quite often. That's why I'm stuck.'
Just at the moment there is a cheaper option available which would give you a camera which will handle portrait work with lovely skin tones and is very good in poor light. I say just at the moment because the Fuji S5, Fuji chip in a D200 body, has been reduced to £500 here in the UK as it is strongly rumoured that Fuji are either pulling out of the DSLR market altogether or have a new camera in the pipeline now that the D200 is no longer being produced. So you can get a D300 for the wildlife and a S5 for portraits at a lot less money than the D700 alone.