Develop a Wordpress plugin

I have this website: [login to view URL] Details: -Wordpress 4.1 -Theme U-Design ( [login to view URL] ) -Visual Composer ( [login to view URL]) I need a plugin that modifies two things: A)Subtitles 1) Remove date and category info from posts: [login to view URL] 2) Add a custom text field in the post edition section. 3) Show the text of the previous custom field after the post title: [login to view URL] B) Shortcode 1) Build a section in the Wp-admin with a look like this: [login to view URL] In each dropdown field must be a list with all published posts. 2) Create a shortcode that shows this in any page or post: [login to view URL] (using the theme's styles) Here is how looks at this time this frontpage articles preview: [login to view URL] And here is the code used to show this content: [udesign_recent_posts category_id="15" num_posts="1" title="" post_offset="2" num_words_limit="22" show_date_author="0" show_more_link="1" show_thumbs="1" thumb_frame_shadow="0" post_thumb_width="280" post_thumb_height="200"] I can provide you a full copy of the entire website in another hosting for testing and develop, to make the job more easy. If you need more info please contact me. Thanks