Can I have contracts uploaded where I can fill in fields with costs, names, etc?

To my understanding, you would like to prefill multiple fields on the form from another source. If that is the case, I would suggest that you check our Spreadsheet to Form widget.

The instructions on how you can set up the widget can be found in this guide.

How-to-use-the-spreadsheet-to-form-widget

Please give it a try and let us know if you need any further assistance.