Good day,
I can do the tasks you are asking.
About the logo, as i see the attached image i will need to redoit but keeping the same fonts and color since its not in good resolution and if i want to scale it to make it a little bit bigger it will very very ugly (pixel distortion).
No problem about updating the EULA, same for the bio and picture.
I can install a plugin that updates automatically the sitemap (xml) whenever you add new info.
About updating Wordpress plugins, i will need to be sure first that your Wordpress its up-to-date plus need to check if the plugins can be updated (why? need to be sure they are still compatible).
Some plugins are not updated at the same rate as WP and this make them not totally compatible, so, if theres a plugin that its not compatible i will not update it because it can cause not only a bad looking result, it can produce an security issue with your website.
I design websites on html, php and CMS based too (WordPress, Joomla, Drupal). I also give tech support in a web hosting company where clients use these CMS to build their websites.
You need it today before daylight? I can do it.