These kinds of predictions are pretty iffy at this stage. Nobody really knows how much material the thing will lose at it swings around the sun. Comet Kohoutek was hugely hyped before it happened, back in the 70's, and there was a huge backlash when it turned out to be kind of a flop.
On the other hand, Halley's Comet performed pretty much exactly as predicted, in the 80's (its properties are much better known). Although the sky was overcast for most of the period, where I was living. There were a few clear nights with really good viewing. Oddly, I found that people got really angry at me, if I suggested they might want to step out and take a look. WTF.