Multiple Magento Tasks for Website

I have multiple tasks for our Magento website. Please read tasks carefully below to ensure you can fulfill ALL tasks promptly. Need: - Cart Time extended for shoppers - Cart Time extended for Admin - Change URL's in files from HTTP to HTTPS - I'm told many files on the server have links in the file itself pointing to HTTP when it should be HTTPS. This is causing an issue for some people where it tells them some of the content isn't secure. I need these corrected and fixed. May take some time to look through the html files to find and correct these. - On pages where we have our email listed I need it to be changed to something where customers have to click to reveal the email. We've been targeted by spammers since we put our email directly on our website for customers to contact in case they have questions. So, to avoid the web crawlers from seeing it, I need something done where its not visible right away until a customer clicks an icon of an email or something. Thus avoiding the bots crawling the web looking for plain emails. - Ensure the port the website is using to the public is correct. I've been told some larger companies cannot access our webpage. Could be due to other issues, but I'm told a possible issue is the port. Need to ensure its on the correct port and can be viewed by anyone. (unless a super strict firewall I guess) - Ensure there is no spam or malware on the website. I've been told that the large companies that cannot access our website say its either a port issue or because the site has malware. I have ran many tests that show nothing, but I'd like an expert to do this as well. - Need our Shopping Cart page edited. Need the buttons for Update Shopping Cart, Clear Shopping Cart, etc to be more visible and spaced apart more. I have another template I would like to model this after. Also make this shopping cart page easier to read. - Would like a floating cart, where when you roll over the cart, it shows you whats in your cart. I have another template to show an example of this. Please make sure you feel comfortable completely these tasks before bidding. Budget $100-$150