WordPress Blog Add New Functions and Update

I am seeking a programmer experienced with WordPress, to update and add functionality as described below. the blog URL is : [login to view URL] The work I want done at the moment is.... 1. Add an image into the header (image supplied by me) [login to view URL] into each template design the enhanced SEO Plugins that are available for Word Press. You will find links on this web page to the plugins I've listed below: [login to view URL] There is a full description as to what these plugins do and why they are so important to have in template design. Specifically, only the following WordPress plugins are required to be installed from that list: • Head META Description • SEO Title Tag • Ultimate Tag Warrior • All In One SEO Pack: (this may have already installed) [login to view URL] • Google Sitemap Generator: [login to view URL] 2... The other plugin I am seeking, is a plugin that will do the following. When a person registers to make a post, they will be automatically subscribed to receive email notifications of new posts, or comments to the post they made. (I know there is a plugin where the poster has to manually hit a 'subscribe' button if they want to receive new post emails but I am seeking an automated solution that removes the need for the poster to have to subscribe.) It may be one of these on this site: [login to view URL] 1..'Subscribe to comments' or 'Wordpress Paged Comments'