I know this other method should probably work as well
internet <–-> modem (bridged) <---> Pfsense 70.111.111.111 PPPOE / gateway 196.111.111.41 <---> DHCP <---> 196.111.111.42 <---> Server
196.111.111.43 <---> Server
196.111.111.44 <---> Server
196.111.111.45 <---> Server
196.111.111.46 <---> LAN
but when trying to manage the rules table becomes it becomes quite messy, specially when you start to add forwarding and load balancing rules, and the rules for the LAN traffic, etc...
that is pretty much why I decided to revert back, to a more simplistic 1:1 setup, to make redirection rules easier to manage, and to have everything at plain sight, not having to worry about accidentally messing up the rules for the Other machine, or mixing up the forwarding rules for the LAN, or scrolling through pages and pages of rules that are similar which are required for load balancing (2 WAN), and multiply that by 6 or more IPs, it becomes like a Book of rules to manage :P