Do some 3D Modelling

Hi, I am looking to customise a pre-existing 3d model of a fully rigged realistic human figure purchased from turbosquid. The models we are considering are: [login to view URL] and [login to view URL] and [login to view URL] The model is currently a Western European looking white male/female which should be adapted by change of the skin tone, hair colour (female) and some of the facial features to have a more South Asian / Indian look. Ideally the figure should also receive some more androgynous features. If it is possible to keep the face morphs while changing the features, that would be great. I want to shoot the customised model in a few different poses, eventually I need 4 different high-res images of the face and the body. For the model would need to be posed and lit. This is a last minute job and I want to see how much can by done through minimal changes first. Most importantly I want to change the colour of skin and hair. Working on the facial features is ideal, but optional. We may consider extending the job by changing the clothes of the model, this depends on the timeline. In the images are some explanation on how the model may be adapted. The reference image of the Indian characters shall only indicate the skin tone and the type we are looking for. Our model should not be modelled to look like them, rather we would like to achieve a certain type with the most basic adjustments. I am happy to answer all questions and to send more reference images. I would prefer to work step by step: 1) change skin colour 2) change hair colour 3) change facial features 4) change body features (optional) 5) pose & light