541373 Clean magento install with import and rebuild theme

Dear all, I have currently a Magento shop 1.5.0.1 that is heavily edited in the core files by another company and i want to get rid of that. What i want you to do is install a clean Magento shop 1.6.x on a sub domain or folder so i can check everything before it goes live. Install the available template that i bought (current is modified with colors) and create an exact copy with the PSD files i have available. Import customers, magento url 301 redirects, products, category`s etc etc. I want it to be a clone of the current shop but build with a clean latest magento version. The url from my current shop is [login to view URL] with a hellomini template from hellotemplates. Let me know if you see possibility`s. Thanks