New WP Site to Replace Old One - open to bidding

I have multisite WP site experiencing problems that I would like to replace with a non-multisite. It is a site devoted to providing free advice and news, as well as recommending web resources, writing tools and apps for writers. Eventually, a paid contest will also be offered. I don’t want recurring payments regarding my site. I mention this because there are a lot of premium plugins that require a monthly fee. I am only interested in free or single-payment only solutions from third parties. I am interested in your recommendations in the following areas: 1. Very Good Security 2. Automatic backups 3. Social media 3.1. Popover signup box to increase email signups 3.1.1. Non-irritating. Pops over in a bouncy or otherwise playful manner 3.1.2. Intelligent, mouse-movement-based behavior 3.1.3. Compatibility between popover and an easy-to-use email list manager 3.2. Easy-to-use email list manager 3.3. Share, like and follow buttons for all the important social media advisable for my type of site 3.4. All advisable social media features 4. A solution other than multisite to handle three blogs to look like the same site 5. Caching and other enhancements that will improve user experience. 6. Transfer of the old site’s content to the new site 7. Online payments 7.1. A form with a PayPal button at the end 7.2. Some easy way to keep track of both free members and paying customers 8. Attractive appearance 8.1. Templates 8.2. Other I would also like to see examples of site that you have designed and speak to some references if possible. I look forward to our successful cooperation. Best regards, John Barefield