os commerce /cre b2b newsletter addon

need to add a link to admin "add a subscriber form" (with option of choosing required fields) in catalog to add a "subscribe to our newsletter" with option to choose newsletter category and an unsubscribe option from admin, catalog and newsletter email footer. all Unsubscribe rs will auto Unsubscribe from the newsletter list and will show in admin under Unsubscribed section all suggestions on improving the newsletter modules will be gladly welcomed if phplist can do all the above please quote how much will it be to replace the current CRE B2B newsletter module with phplist thanks