I have ice-climbed at Buffalo many years ago. It is very limited and variable.
The best spot to try would be the SW side of The Hump, approaching from Cresta Valley. There's some gentle slopes to crampon up if conditions are good and one or two short bits of steep ice to top-rope.
I've also climbed in the Wall of China gully, which I quite enjoyed, but probably not suitable for what you're after.
The only advantage of going there is that it's really close to the car if it's in condition.
The other places mentioned by people are much better but if it stays really cold this week and keeps dumping little bits of snow at Buffalo then it might be OK. The slightest warming will turn things at Buffalo to water.
If Feathertop is an option then head for there instead, but if Buffalo is your only option make sure to start early.