Combination of ViArt Stores into Multi-Store Format

We have four websites on the ViArt ecommerce platform. Each site is currently using it's own unique DB and filesystem, because they were all launched prior to Viart introducing multi-site capability. Now that viart supports multiple sites in the same DB, we would like to combine the four sites we have into the new Viart multi-site platform which means that we need help combining the tables associated with users, items and orders. And, we need help migrating the templates so that the designs work in the new version and look the same as they do today. In some cases, we may have customers duplicated across sites that need to be combined into common records and we also have Items that are common across sites that need to be combined. We can help with the item and customer mapping. Viart is PHP based, using a MySQL DB. Our preference is to find a developer that is familiar with this specific ViArt platform; however, it is open-source and pretty clean eCommerce and content management system so most people familiar with PHP should be able to figure it out. We will likely have additional project after this one, so please keep that in mind when bidding. We are looking for a highly skilled, yet affordable partner. Rich