Database Migration and OpenCart switch over

We are in the very last stage of migrating to Opencart from our old shopping cart platform. Everything is ready and we even had a custom php script written to migrate the old database to the new one. All we need is someone to help us with the migration and make some adjustments to php scripts if we need to. Then we will switch over links in cart from ip address to url and go live. This project is simply for the following: 1. Helping me through the implementation of our migration script we had written to see if everything is imported into Opencart correctly and then making adjustments to script if necessary to get data in right place. 2. Helping me switch over url's (with find , replace ) then working through any errors in Opencart to go live. Like I said everything is ready to go with migration I just need someone with expertise in php and sql and Opencart to be available and guide this process and correct any errors so that we are back live as soon as possible. Thanks