Hi,
As stated here
http://www.seomoz.org/learn-seo/redirection
Using 301 redirect will preserve over 90% of your link juice. Give Google some time and it should pick up new page locations depending on your crawl rate.
As for seeing pages as new content, based on my short experience there is a period where Google will display new urls as new pages, but after a while he will realize that they have just moved. I'm not sure if there is a way to avoid this.
Kind regards