I think the problem here is whether it can maintain the level it has reached right now. This is not the first time that after it has breached the 300 level we saw some quick selling going on that eventually pulled the price back to the 220 to 240 range. Let's see if it will be different this time.
I believe this time bitcoin may do different things as it has progressed to this level with high volumes than last attempts. It means it has enough reasons to stay there at $300 levels for some time. Sustaining above $300 is more important for further price movement.
The price is going back bellow than $300.
At the moment it is 298 as shows on coindesk bitcoin price chart.
I think it should take the highest level on November or December for this year
that can be sure yet as the price climbing faster than normal is a sign of unstability. We cannot sure what will happen with it. And the halving is coming soon too so this is unpredictable