translate Wordpress site to expressionengine

I am taking over a site currently built in Wordpress and am upgrading it to Expression Engine, in addition to building out new sections. Will use MSM for expressionengine for additional subdomains. In addition to importing wp->ee db, will need wp logic translated to ee channel tags, and wp custom post types translated to ee custom fields. The front end is build with Twitter Bootstrap. I'm keeping all of the front end code (with a few improvements here & there), so the bulk of the work is translating cms stuff.