Wordpress Multi site installation

We want to have someone set up a wordpress multi site installation for us. Below are the tasks 1. Install the multi site WP 2. Create three separate sites - with three domains (set up domain mapping) and install themes from [login to view URL] (we have an account with them) 3. For one of the domains we already have a blog in typepad, posts from which we will import. But after the posts have been imported and the domain is transferred we need to forward the links from the old domain hosting so we dont loose the SEO value built in that domain. 4. There is little or no theme customization in phase 1 of the project.