It's very efficient for WANs and is a connectionless, routable protocol. This would work and be a good solution. NetBEUI is a low-overhead protocol and is fast and easy to configure. It is non-routable, so it works well with small Microsoft networks. NetBeui is not a good choice for large networks and is not routable.
Routers maintain the routing tables to the local and remote networks.
You can choose to manually configure the routers, but using RIP, OSPF, or another routing protocol makes the routing table configuration and updates automatic. ISA come in 8 or 16 bit, MCA cards come in 16 or 32 bit, and EISA are 32 bit. Bus mastering is the fastest memory transfer listed, and is supported on EISA, MCA, and PCI cards. The EISA with bus mastering would give the best performance. An 8-bit card is not going to provide good performance, and a card that uses Cat 5 cabling will not affect the speed of the network card.