Customizing templates and scripts to suit your needs can take a lot of time depending on the complexity of your design goals. 3 days is ambiguous.
How you'll resize the images depends on what software you have at your disposal. As for making some pop-up for when you click or mouseover the attribute image...you'll need to customize your templates and provide that functionality. Also try searching the forums, as others may have likely done the same.
You could also use the extra images as part of the product to illustrate the various differences and leave the attributes/options as text alone.




