Hello MakersPointe,
I am simply an expert level Linux system administrator with over 12 years of experiences in server setup/configuration/troubleshooting etc. Please kindly have a look at my previously completed projects as well as my ratings in order to qualify my experiences.
I can optimize the centos server for magento as follows:
1- disable uncessary server services,
2- Use nginx-php-fpm if not used OR if apache is desired can optimize apaceh
3- can setup varnish/memcache for caching,
4- can optimize mysql for query caching,
5- if desired and allowed can setup a CDN network for static content.
Additionally i can have a look at Hyper-V configuration (i guess you are using server 2012?) to see if its best configured for CentOS (network, disk, ram, cpu and etc. settings).
I can start right away today and can finish the optimization within 2-3 days at most.
Please note that If there would be no performance increase in server then i would not ask any money (to verify this performance increase, we can use 3rd parth website performance test tools)
Kindly let me know if you have any additional questions & requests.
Thank you!
Pardus.