customize Joomla! - validation mail & groupmail

Hi there, Looking for an expert programmer with solid understanding of Joomla! (Using Joomla 3.4.1) -------------- 1. Activation e-mail value: user group I am using the Joom Profile component to allow users to choose predefined usergroup during registration process, with native "verified by admin" function. It is not relevant, since it is Joomla! core modification I want. To do: - ad selected usergroup in admins automatic validation email - remove username from that same email In language overrides, find this constant: COM_USERS_EMAIL_ACTIVATE_WITH_ADMIN_ACTIVATION_BODY You will see 5 times '%s' Number 4 is username, it should represent usergroup instead. -------------- 2. Ad user name to native Joomla! Groupmail There should be an option to enter the name of the user in the groupmail message. Example: {name} When sending Joomla! should deliver the mail with the {name} replaced by the actual name in the name field of the user. I am open to different solutions off course. Keep in mind that I am NOT looking for a newsletter module. It's intended for internal mail only, and it MUST be able to select native usergroups as recipients.