It looks great! I started my personal static website more than twenty years ago, and I have maintained it ever since with only a text editor and FTP software. When I began, I learned what I needed from books (!). If I were starting now, your site would be the perfect introduction.
Yes, for the sake of your visitors. If your site is only http, then middleboxes can use your site load to opportunistically attack the visitor.
Of course, the probability that a visitor would not visit any other non-TLS site that day is low, but that probability is getting lower with every passing day.
