Hi SM18
Setting up multiple network adapters is fairly straight forward on your ve appliance, you 1st need to decide your deployment architecture the diagram you have is a good start, depending if you want to go the one arm route or external -> internal interface that will depend how much network adapters you need, I think by default the ova template comes with 3 adapters one for HA, one for external and for internal and additional management. if you go one arm you can get away with one interface for your load balancing using snat. If you require documentation on how to setup the adapters or even the ssl offloading the F5 VE LAB package that is available from the f5 downloads is a perfect place to start.