Only experienced sysadmins please.
Payment is done after testing the system and after checking the system works correctly.
1) Configuratuion APACHE (Nginx as reverse proxy), Mysql, CSF, PHP FPM, and best cache system and acelerator for this combination (APC/MEMCACHED/XCACHE/VARNISH)
for HIGH PERFORMANCE and HIGH AVAIBILITY
2) hardening of the system, CSF and LFD check
All of this into a 8 core Ubuntu Box. The current load of my site is 2.5 secs, I want to take this to the middle with the most correct configuration of the aforementioned system.