3d model and render of products

We need someone to 3D model and render our bottle (photo realistic) for use in marketing material. The 3D models need to be done in proper 3D software (3D Studio Max or similar) so that when you have modelled the bottle we'll be able to create various mockups for use in marketing.

One this we would like if when you render the final image to be able take the image in photoshop and change a section of the product which denotes the colour of the item in the bottle. I've done this previously where the render includes an alpha channel where in photoshop we can adjust the colors.

Please confirm this is something you're confident working with and what package you will be using to produce the models and renders.