2-node Apache cluster + mysql galera setup + haproxy or similar for LB

Basically I want to setup: -- 2 apache nodes with memcached or some sort of caching to help with php sessions between multiple servers that syncs users, web content etc. -- several mysql db nodes using mysql/galera or mariadb/galera -- haproxy is already setup but looking for something better if it exists Wanting to be able to add a user, virtual host etc and it get propagated across all apache nodes. Wanting to load balancing incoming web requests between apache nodes. Wanting apache nodes to use memcached, xcache or something to handle php sessions Open to suggestions on using nginx for static content and apache for php etc. See attached document for detailed descriptions of EXACTLY what I have currently, what I'm trying to accomplish and how I'd like to get there along with areas where I'm looking for your suggestions. Please bid after reading the attached document and be sure to include HOW you propose to accomplish what I'm wanting along with your bid. Thanks!!