Hello,
As per your needs, we will upgrade Magento version. 1.7.0.2 to version 1.9.2 and we will make sure that the existing theme will be compatible and functionality would be same.
Also, we will install "fontis" magento australia post shipping extension.
We are expert and experienced web developers -- PHP, MySQL, JavaScript, JQuery, HTML5, CSS3, Bootstrap, etc.
Please visit our profile to see our feedback and most recent work.
If you don't mind, could you please share your website address?
As of now, I am freely available to work full time in your project.
With regards
Pooja