Re-design house plan

I'm looking to re-design my house plan, which is over 2000 square feet. I have a general idea of what I would like the layout to look like, but I'm open to suggestions. The specific changes I'm looking for are to change the layout of the house. As for design style or elements, I have a general idea but I'm open to any suggestions that a designer may have. This project requires a creative eye and attention to detail to ensure the house looks and functions perfectly.
The House is intended to be life on a grand scale. We were looking at the Hamptons style but are open to suggestions.