The price will keep on rising as the main stream news media are reporting the rise, that will fuel further rise.
I hope the price will rise slowly.
Slow and steady would probably be more sustainable than rapid increases. But everyone thinks Bitcoin is going to make them rich, which is why you have rapid crashes, like the $80 drop we've seen in the last 24 hours after a rapid rise to almost $500 this week. This kind of rapid rise isn't sustainable, and you get these dramatic drops when people get scared of holding the bag when another bubble bursts.
Yes only slow and steady will win the race. If bitcoin claimb slowly towards higher prices then we can expect more sustaining higher prices. If bitcoin goes into higher places in two days then we might need to see lower prices in third or fourth day.