Does it make sense to still use firewire?
I have firewire in production still and you can usually get excellent performance / $ by buying older technology.


The latency of FireWire is excellent - on par with Thunderbolt
The bandwidth of firewire is nearly that of gigabit ethernet and way faster than any source or destination of data that you will send on that era hardware.
The reliability of FireWire is excellent


Why spend more for a connection that won't limit your speeds and is very easy on the wallet and reliable? I say go for it unless you really want to spend more on the card and cables or could use gigabit ethernet instead.