Domain for Sale Landing Page

I had an account here before but it has disappeared. I had several projects completed here before, mostly logos. I used to design and build my own websites using software and hand coding. It was a long time ago so I have forgotten how to do it plus I had a brain tumor removed which has affected my memory. I have been collecting domains for 18 years and I had to retire for medical reasons. So I want to start a domain flipping business. Currently I have 165 domains. I need a Domain for Sale Landing Page Template that I can post for each of my domains. I need 3 or 4 variations. It must be clean and simple. I must be able to edit it myself. I used Adobe Dreamweaver before. I am not good at Wordress. In some cases I only have the .com extensions for sale, others I have the .com, .org and .net while others I have the .com, .[login to view URL], .org and .net. I have seen templates for sale online for $14. There are also companies which offer a complete service for a fee. I have found some samples which interest me which I have attached. I need either templates in 2 different colours or if it is possible to switch between 2 colours. I want one with a fresh, green background which resembles growth and prosperity. The other is a bright blue background which should speak to entrepreneurs and businesses who dream to dream big. I have samples of the colours but can't add any more attachments. I made 2 samples of the wording which I have attached. I need to be able to apply SEO. Must work on mobile devices and desktop or laptops. Do you have any questions? I am open to suggestions based on your expert opinion. I want to make a decision in the next couple of days. After this I have 2 more projects.