I don't know why you are downvoted - this is one of the tasks, where Go is just a better C. I do like the approach of this stack, having a slim stack with a staticly compiled web page. But switching to Go gives the developer much more safety and quicker development for the custom part.
C is great for developing components like sqlite - which are well tested and only slowly evolving. But the quick changing custom code in a web site, there Go shines.
I can recommend Go for this too. I use it for small APIs. Go has really easy cross compiling as well, so deploying from Linux to OpenBSD is really simple.
I still use httpd as the proxy but use compiled Go executables for CGI.
