Router&Switching guy here say easy.
In order to take bandwidth advantage, u most likely will have 3 separate NICs, and 3 LAN subnets to get where u need to go.
The trick is, know where your application servers are (IP range), then manipulate Windows routing table so for example, the routing entry table will say:
In order to get to THIS SERVER (IP range), the door to this destination is NICx IP.