There are numerous tutorials/articles(some even with benchmarks) on how to create an optimized stack to run Wordpress(or any dynamic site, for that matter). The site doesn't get frequently updated(best case scenario one article per week), so a long cache retention period would be fine. Oh, and i plan on running that on a dedicated server(or maybe a VPS, not sure yet, depends on cost and performance), so i will have full control of the system.
But i've failed to find one with the stack that seems(at least to me) to be ideal for such a scenario: Linux(probably Debian), Nginx - on steroids, with pagespeed and fastcgi, MariaDB, PHP - on steroids, with HHVM and maybe something to help with caching(no idea if there won'be conflicts), like PHP-FPM or PHP-APC, Varnish.
So, in response to criticism, i have edited my main question to: What would be the optimal stack? Is pagespeed as good as it sounds? And what about HHVM? Does nginx's fastcgi work with PHP-FPM/PHP-APC?